diff --git a/doc/api/quic.md b/doc/api/quic.md
index 8f3834dccf9c..7a52e4f72c1f 100644
--- a/doc/api/quic.md
+++ b/doc/api/quic.md
@@ -3990,8 +3990,9 @@ A few things to note:
   the request is `HEADERS` followed by `END_STREAM`.
 * The `onheaders` callback receives the response pseudo-headers and
   regular headers in a single object with lowercase string keys.
-  After the callback returns, the same object is also accessible
-  via [`stream.headers`][].
+  For incoming headers, the `:status` pseudo-header is converted to
+  a `number`, matching HTTP/2 behavior. After the callback returns,
+  the same object is also accessible via [`stream.headers`][].
 * Reading `for await (const chunks of stream)` consumes the response
   body. Each iteration yields a `Uint8Array[]` batch of chunks.
 * HTTP semantic helpers (URL parsing, method/status validation,
diff --git a/lib/internal/quic/quic.js b/lib/internal/quic/quic.js
index 666e1f7b013b..f645998e628d 100644
--- a/lib/internal/quic/quic.js
+++ b/lib/internal/quic/quic.js
@@ -1285,14 +1285,19 @@ function parseHeaderPairs(pairs) {
   assert(pairs.length % 2 === 0);
   const block = { __proto__: null };
   for (let n = 0; n + 1 < pairs.length; n += 2) {
-    if (block[pairs[n]] !== undefined) {
-      if (ArrayIsArray(block[pairs[n]])) {
-        ArrayPrototypePush(block[pairs[n]], pairs[n + 1]);
+    const name = pairs[n];
+    let value = pairs[n + 1];
+    // Match HTTP/2 behavior: incoming :status is exposed as a number.
+    if (name === ':status')
+      value |= 0;
+    if (block[name] !== undefined) {
+      if (ArrayIsArray(block[name])) {
+        ArrayPrototypePush(block[name], value);
       } else {
-        block[pairs[n]] = [block[pairs[n]], pairs[n + 1]];
+        block[name] = [block[name], value];
       }
     } else {
-      block[pairs[n]] = pairs[n + 1];
+      block[name] = value;
     }
   }
   return block;
diff --git a/test/parallel/test-quic-h3-callback-errors.mjs b/test/parallel/test-quic-h3-callback-errors.mjs
index f4a9477ca873..be8ed391b8d5 100644
--- a/test/parallel/test-quic-h3-callback-errors.mjs
+++ b/test/parallel/test-quic-h3-callback-errors.mjs
@@ -151,7 +151,7 @@ async function makeServer(onheadersHandler, extraOpts = {}) {
       ':authority': 'localhost',
     },
     onheaders: mustCall(function(headers) {
-      assert.strictEqual(headers[':status'], '200');
+      assert.strictEqual(headers[':status'], 200);
     }),
     ontrailers: mustCall(function() {
       throw new Error('ontrailers sync error');
@@ -265,7 +265,7 @@ async function makeServer(onheadersHandler, extraOpts = {}) {
       ':authority': 'localhost',
     },
     onheaders: mustCall(function(headers) {
-      assert.strictEqual(headers[':status'], '200');
+      assert.strictEqual(headers[':status'], 200);
     }),
   });
 
diff --git a/test/parallel/test-quic-h3-close-behavior.mjs b/test/parallel/test-quic-h3-close-behavior.mjs
index d25cd50e4ef5..e3b73ce9b0b9 100644
--- a/test/parallel/test-quic-h3-close-behavior.mjs
+++ b/test/parallel/test-quic-h3-close-behavior.mjs
@@ -62,7 +62,7 @@ const decoder = new TextDecoder();
       ':authority': 'localhost',
     },
     onheaders: mustCall((headers) => {
-      assert.strictEqual(headers[':status'], '200');
+      assert.strictEqual(headers[':status'], 200);
     }),
   });
 
@@ -74,7 +74,7 @@ const decoder = new TextDecoder();
       ':authority': 'localhost',
     },
     onheaders: mustCall((headers) => {
-      assert.strictEqual(headers[':status'], '200');
+      assert.strictEqual(headers[':status'], 200);
     }),
   });
 
diff --git a/test/parallel/test-quic-h3-concurrent-requests.mjs b/test/parallel/test-quic-h3-concurrent-requests.mjs
index c81403bf1362..5bd5635008ca 100644
--- a/test/parallel/test-quic-h3-concurrent-requests.mjs
+++ b/test/parallel/test-quic-h3-concurrent-requests.mjs
@@ -72,7 +72,7 @@ const requests = paths.map(mustCall(async (path) => {
       ':authority': 'localhost',
     },
     onheaders: mustCall((headers) => {
-      assert.strictEqual(headers[':status'], '200');
+      assert.strictEqual(headers[':status'], 200);
       headersReceived.resolve();
     }),
   });
diff --git a/test/parallel/test-quic-h3-datagram.mjs b/test/parallel/test-quic-h3-datagram.mjs
index 4d081a9f1bce..38aeb971c8fe 100644
--- a/test/parallel/test-quic-h3-datagram.mjs
+++ b/test/parallel/test-quic-h3-datagram.mjs
@@ -87,7 +87,7 @@ const decoder = new TextDecoder();
       ':authority': 'localhost',
     },
     onheaders: mustCall(function(headers) {
-      assert.strictEqual(headers[':status'], '200');
+      assert.strictEqual(headers[':status'], 200);
     }),
   });
 
@@ -151,7 +151,7 @@ const decoder = new TextDecoder();
       ':authority': 'localhost',
     },
     onheaders: mustCall((headers) => {
-      assert.strictEqual(headers[':status'], '200');
+      assert.strictEqual(headers[':status'], 200);
     }),
   });
 
diff --git a/test/parallel/test-quic-h3-error-codes.mjs b/test/parallel/test-quic-h3-error-codes.mjs
index cd5c9ff0a25a..3a91a2e8f056 100644
--- a/test/parallel/test-quic-h3-error-codes.mjs
+++ b/test/parallel/test-quic-h3-error-codes.mjs
@@ -55,7 +55,7 @@ const decoder = new TextDecoder();
       ':authority': 'localhost',
     },
     onheaders: mustCall(function(headers) {
-      assert.strictEqual(headers[':status'], '200');
+      assert.strictEqual(headers[':status'], 200);
     }),
   });
 
@@ -106,7 +106,7 @@ const decoder = new TextDecoder();
       ':authority': 'localhost',
     },
     onheaders: mustCall(function(headers) {
-      assert.strictEqual(headers[':status'], '200');
+      assert.strictEqual(headers[':status'], 200);
     }),
   });
 
diff --git a/test/parallel/test-quic-h3-goaway.mjs b/test/parallel/test-quic-h3-goaway.mjs
index c3b6e3ae246a..bb0bf8e966c1 100644
--- a/test/parallel/test-quic-h3-goaway.mjs
+++ b/test/parallel/test-quic-h3-goaway.mjs
@@ -78,7 +78,7 @@ dc.subscribe('quic.session.goaway', mustCall((msg) => {
   await clientSession.opened;
 
   const onClientHeaders = mustCall(function(headers) {
-    assert.strictEqual(headers[':status'], '200');
+    assert.strictEqual(headers[':status'], 200);
     if (++clientHeaderCount === 2) {
       bothHeadersReceived.resolve();
     }
diff --git a/test/parallel/test-quic-h3-header-validation.mjs b/test/parallel/test-quic-h3-header-validation.mjs
index 873991a89864..a75a884c39b9 100644
--- a/test/parallel/test-quic-h3-header-validation.mjs
+++ b/test/parallel/test-quic-h3-header-validation.mjs
@@ -91,7 +91,7 @@ const decoder = new TextDecoder();
     },
     onheaders: mustCall(function(headers) {
       // Client should also receive lowercased response header names.
-      assert.strictEqual(headers[':status'], '200');
+      assert.strictEqual(headers[':status'], 200);
       assert.strictEqual(headers['content-type'], 'text/html');
       assert.strictEqual(headers['x-response-header'], 'ResponseValue');
 
@@ -148,7 +148,7 @@ const decoder = new TextDecoder();
       ':authority': 'localhost',
     },
     onheaders: mustCall((headers) => {
-      assert.strictEqual(headers[':status'], '204');
+      assert.strictEqual(headers[':status'], 204);
     }),
   });
 
diff --git a/test/parallel/test-quic-h3-informational-headers.mjs b/test/parallel/test-quic-h3-informational-headers.mjs
index 1bab5b26d436..357b507ae0db 100644
--- a/test/parallel/test-quic-h3-informational-headers.mjs
+++ b/test/parallel/test-quic-h3-informational-headers.mjs
@@ -34,7 +34,7 @@ dc.subscribe('quic.stream.info', mustCall((msg) => {
   assert.ok(msg.stream, 'stream.info should include stream');
   assert.ok(msg.session, 'stream.info should include session');
   assert.ok(msg.headers, 'stream.info should include headers');
-  assert.strictEqual(msg.headers[':status'], '103');
+  assert.strictEqual(msg.headers[':status'], 103);
 }));
 
 // quic.stream.headers also fires for the final response headers.
@@ -89,12 +89,12 @@ const stream = await clientSession.createBidirectionalStream({
     ':authority': 'localhost',
   },
   oninfo: mustCall(function(headers) {
-    assert.strictEqual(headers[':status'], '103');
+    assert.strictEqual(headers[':status'], 103);
     assert.strictEqual(headers.link, '</style.css>; rel=preload; as=style');
     clientInfoReceived.resolve();
   }),
   onheaders: mustCall(function(headers) {
-    assert.strictEqual(headers[':status'], '200');
+    assert.strictEqual(headers[':status'], 200);
     assert.strictEqual(headers['content-type'], 'text/plain');
     clientHeadersReceived.resolve();
   }),
@@ -107,7 +107,7 @@ const body = await bytes(stream);
 assert.strictEqual(decoder.decode(body), responseBody);
 
 // stream.headers should return the final (initial) headers, not 1xx.
-assert.strictEqual(stream.headers[':status'], '200');
+assert.strictEqual(stream.headers[':status'], 200);
 
 await Promise.all([stream.closed, serverDone.promise]);
 await clientSession.close();
diff --git a/test/parallel/test-quic-h3-origin.mjs b/test/parallel/test-quic-h3-origin.mjs
index 05e7d166585e..9f80449b6b65 100644
--- a/test/parallel/test-quic-h3-origin.mjs
+++ b/test/parallel/test-quic-h3-origin.mjs
@@ -77,7 +77,7 @@ const decoder = new TextDecoder();
       ':authority': 'example.com',
     },
     onheaders: mustCall(function(headers) {
-      assert.strictEqual(headers[':status'], '200');
+      assert.strictEqual(headers[':status'], 200);
     }),
   });
 
@@ -173,7 +173,7 @@ const decoder = new TextDecoder();
       ':authority': 'custom-port.example.com',
     },
     onheaders: mustCall(function(headers) {
-      assert.strictEqual(headers[':status'], '200');
+      assert.strictEqual(headers[':status'], 200);
     }),
   });
 
diff --git a/test/parallel/test-quic-h3-pending-stream.mjs b/test/parallel/test-quic-h3-pending-stream.mjs
index 836c032e2b99..a6e9c8cfd912 100644
--- a/test/parallel/test-quic-h3-pending-stream.mjs
+++ b/test/parallel/test-quic-h3-pending-stream.mjs
@@ -64,7 +64,7 @@ const decoder = new TextDecoder();
     priority: 'high',
     incremental: true,
     onheaders: mustCall(function(headers) {
-      assert.strictEqual(headers[':status'], '200');
+      assert.strictEqual(headers[':status'], 200);
     }),
   });
 
diff --git a/test/parallel/test-quic-h3-post-filehandle.mjs b/test/parallel/test-quic-h3-post-filehandle.mjs
index ce6bec75c57a..a4c583463d24 100644
--- a/test/parallel/test-quic-h3-post-filehandle.mjs
+++ b/test/parallel/test-quic-h3-post-filehandle.mjs
@@ -76,7 +76,7 @@ writeFileSync(testFile, testContent);
     },
     body: fh,
     onheaders: mustCall(function(headers) {
-      assert.strictEqual(headers[':status'], '200');
+      assert.strictEqual(headers[':status'], 200);
       clientHeadersReceived.resolve();
     }),
   });
diff --git a/test/parallel/test-quic-h3-post-request.mjs b/test/parallel/test-quic-h3-post-request.mjs
index adf874a0e8aa..c5d9635a640c 100644
--- a/test/parallel/test-quic-h3-post-request.mjs
+++ b/test/parallel/test-quic-h3-post-request.mjs
@@ -84,7 +84,7 @@ const stream = await clientSession.createBidirectionalStream({
   },
   body: encoder.encode(requestBody),
   onheaders: mustCall(function(headers) {
-    assert.strictEqual(headers[':status'], '200');
+    assert.strictEqual(headers[':status'], 200);
     clientHeadersReceived.resolve();
   }),
 });
diff --git a/test/parallel/test-quic-h3-priority.mjs b/test/parallel/test-quic-h3-priority.mjs
index fcf7210b703c..10be3d6f216e 100644
--- a/test/parallel/test-quic-h3-priority.mjs
+++ b/test/parallel/test-quic-h3-priority.mjs
@@ -67,7 +67,7 @@ const decoder = new TextDecoder();
     priority: 'high',
     incremental: false,
     onheaders: mustCall(function(headers) {
-      assert.strictEqual(headers[':status'], '200');
+      assert.strictEqual(headers[':status'], 200);
     }),
   });
 
@@ -85,7 +85,7 @@ const decoder = new TextDecoder();
     priority: 'low',
     incremental: true,
     onheaders: mustCall(function(headers) {
-      assert.strictEqual(headers[':status'], '200');
+      assert.strictEqual(headers[':status'], 200);
     }),
   });
   assert.deepStrictEqual(stream2.priority, { level: 'low', incremental: true });
@@ -99,7 +99,7 @@ const decoder = new TextDecoder();
       ':authority': 'localhost',
     },
     onheaders: mustCall(function(headers) {
-      assert.strictEqual(headers[':status'], '200');
+      assert.strictEqual(headers[':status'], 200);
     }),
   });
   assert.deepStrictEqual(stream3.priority, { level: 'default', incremental: false });
@@ -113,7 +113,7 @@ const decoder = new TextDecoder();
       ':authority': 'localhost',
     },
     onheaders: mustCall(function(headers) {
-      assert.strictEqual(headers[':status'], '200');
+      assert.strictEqual(headers[':status'], 200);
     }),
   });
   // Default priority initially.
@@ -215,7 +215,7 @@ const decoder = new TextDecoder();
     },
     body: encoder.encode('signal'),
     onheaders: mustCall(function(headers) {
-      assert.strictEqual(headers[':status'], '200');
+      assert.strictEqual(headers[':status'], 200);
     }),
   });
   assert.deepStrictEqual(stream.priority, { level: 'default', incremental: false });
diff --git a/test/parallel/test-quic-h3-qpack-settings.mjs b/test/parallel/test-quic-h3-qpack-settings.mjs
index e56730531c0f..f30b7163cf6b 100644
--- a/test/parallel/test-quic-h3-qpack-settings.mjs
+++ b/test/parallel/test-quic-h3-qpack-settings.mjs
@@ -35,7 +35,7 @@ async function makeRequest(clientSession, path) {
       ':authority': 'localhost',
     },
     onheaders: mustCall(function(headers) {
-      assert.strictEqual(headers[':status'], '200');
+      assert.strictEqual(headers[':status'], 200);
     }),
   });
   const body = await bytes(stream);
diff --git a/test/parallel/test-quic-h3-request-response.mjs b/test/parallel/test-quic-h3-request-response.mjs
index e359e492f753..cde16684d7e9 100644
--- a/test/parallel/test-quic-h3-request-response.mjs
+++ b/test/parallel/test-quic-h3-request-response.mjs
@@ -93,7 +93,7 @@ const stream = await clientSession.createBidirectionalStream({
     ':authority': 'localhost',
   },
   onheaders: mustCall(function(headers) {
-    assert.strictEqual(headers[':status'], '200');
+    assert.strictEqual(headers[':status'], 200);
     assert.strictEqual(headers['content-type'], 'text/plain');
     clientHeadersReceived.resolve();
   }),
@@ -106,7 +106,7 @@ const body = await bytes(stream);
 assert.strictEqual(decoder.decode(body), responseBody);
 
 // stream.headers should return the buffered response headers.
-assert.strictEqual(stream.headers[':status'], '200');
+assert.strictEqual(stream.headers[':status'], 200);
 
 await Promise.all([stream.closed, serverDone.promise]);
 await clientSession.close();
diff --git a/test/parallel/test-quic-h3-settings.mjs b/test/parallel/test-quic-h3-settings.mjs
index 3a2bd9387f57..733d3865e872 100644
--- a/test/parallel/test-quic-h3-settings.mjs
+++ b/test/parallel/test-quic-h3-settings.mjs
@@ -71,7 +71,7 @@ const decoder = new TextDecoder();
       'x-second': 'two',
     },
     onheaders: mustCall(function(headers) {
-      assert.strictEqual(headers[':status'], '200');
+      assert.strictEqual(headers[':status'], 200);
     }),
   });
 
@@ -129,7 +129,7 @@ const decoder = new TextDecoder();
       'x-long': longValue,
     },
     onheaders: mustCall(function(headers) {
-      assert.strictEqual(headers[':status'], '200');
+      assert.strictEqual(headers[':status'], 200);
     }),
   });
 
@@ -185,7 +185,7 @@ const decoder = new TextDecoder();
       ':authority': 'localhost',
     },
     onheaders: mustCall(function(headers) {
-      assert.strictEqual(headers[':status'], '200');
+      assert.strictEqual(headers[':status'], 200);
     }),
   });
 
diff --git a/test/parallel/test-quic-h3-status-code-type.mjs b/test/parallel/test-quic-h3-status-code-type.mjs
new file mode 100644
index 000000000000..a1bc7178e17a
--- /dev/null
+++ b/test/parallel/test-quic-h3-status-code-type.mjs
@@ -0,0 +1,64 @@
+// Flags: --experimental-quic --experimental-stream-iter --no-warnings
+
+// Verify incoming :status is exposed as a number, matching HTTP/2 behavior.
+// See https://github.com/nodejs/node/issues/63557
+
+import { hasQuic, skip, mustCall } from '../common/index.mjs';
+import assert from 'node:assert';
+import * as fixtures from '../common/fixtures.mjs';
+
+if (!hasQuic) {
+  skip('QUIC is not enabled');
+}
+
+const { listen, connect } = await import('node:quic');
+const { createPrivateKey } = await import('node:crypto');
+
+const key = createPrivateKey(fixtures.readKey('agent1-key.pem'));
+const cert = fixtures.readKey('agent1-cert.pem');
+
+const codes = [200, 204, 404];
+let serverResponses = 0;
+const serverDone = Promise.withResolvers();
+
+const serverEndpoint = await listen(mustCall(async (ss) => {
+  ss.onstream = mustCall(() => {
+    if (++serverResponses === codes.length) {
+      ss.close();
+      serverDone.resolve();
+    }
+  }, codes.length);
+}), {
+  sni: { '*': { keys: [key], certs: [cert] } },
+  onheaders: mustCall(function() {
+    const status = codes[serverResponses - 1];
+    this.sendHeaders({ ':status': String(status) }, { terminal: true });
+    this.writer.endSync();
+  }, codes.length),
+});
+
+const clientSession = await connect(serverEndpoint.address, {
+  servername: 'localhost',
+  verifyPeer: 'manual',
+});
+await clientSession.opened;
+
+for (const expected of codes) {
+  const stream = await clientSession.createBidirectionalStream({
+    headers: {
+      ':method': 'GET',
+      ':path': '/',
+      ':scheme': 'https',
+      ':authority': 'localhost',
+    },
+    onheaders: mustCall(function(headers) {
+      assert.strictEqual(typeof headers[':status'], 'number');
+      assert.strictEqual(headers[':status'], expected);
+    }),
+  });
+  await stream.closed;
+}
+
+await serverDone.promise;
+await clientSession.close();
+await serverEndpoint.close();
diff --git a/test/parallel/test-quic-h3-trailing-headers.mjs b/test/parallel/test-quic-h3-trailing-headers.mjs
index e19886fa5bad..f4ffc223d4d5 100644
--- a/test/parallel/test-quic-h3-trailing-headers.mjs
+++ b/test/parallel/test-quic-h3-trailing-headers.mjs
@@ -94,7 +94,7 @@ const stream = await clientSession.createBidirectionalStream({
     ':authority': 'localhost',
   },
   onheaders: mustCall(function(headers) {
-    assert.strictEqual(headers[':status'], '200');
+    assert.strictEqual(headers[':status'], 200);
     clientHeadersReceived.resolve();
   }),
   ontrailers: mustCall(function(trailers) {
@@ -114,7 +114,7 @@ assert.strictEqual(decoder.decode(body), responseBody);
 await clientTrailersReceived.promise;
 
 // stream.headers should still be the initial headers, not trailers.
-assert.strictEqual(stream.headers[':status'], '200');
+assert.strictEqual(stream.headers[':status'], 200);
 
 await Promise.all([stream.closed, serverDone.promise]);
 await clientSession.close();
diff --git a/test/parallel/test-quic-h3-zero-rtt-rejected-settings.mjs b/test/parallel/test-quic-h3-zero-rtt-rejected-settings.mjs
index c17f2ad3994c..755bde188e0b 100644
--- a/test/parallel/test-quic-h3-zero-rtt-rejected-settings.mjs
+++ b/test/parallel/test-quic-h3-zero-rtt-rejected-settings.mjs
@@ -74,7 +74,7 @@ async function getTicket(endpointOptions) {
       ':authority': 'localhost',
     },
     onheaders: mustCall(function(headers) {
-      assert.strictEqual(headers[':status'], '200');
+      assert.strictEqual(headers[':status'], 200);
     }),
   });
   const body = await bytes(s);
diff --git a/test/parallel/test-quic-h3-zero-rtt.mjs b/test/parallel/test-quic-h3-zero-rtt.mjs
index ef51c63ee8aa..f836caa1ec4f 100644
--- a/test/parallel/test-quic-h3-zero-rtt.mjs
+++ b/test/parallel/test-quic-h3-zero-rtt.mjs
@@ -83,7 +83,7 @@ const s1 = await cs1.createBidirectionalStream({
     ':authority': 'localhost',
   },
   onheaders: mustCall(function(headers) {
-    assert.strictEqual(headers[':status'], '200');
+    assert.strictEqual(headers[':status'], 200);
   }),
 });
 const body1 = await bytes(s1);
@@ -111,7 +111,7 @@ const s2 = await cs2.createBidirectionalStream({
     ':authority': 'localhost',
   },
   onheaders: mustCall(function(headers) {
-    assert.strictEqual(headers[':status'], '200');
+    assert.strictEqual(headers[':status'], 200);
   }),
 });