diff --git a/README.md b/README.md
index 2117c2a..ed214a5 100644
--- a/README.md
+++ b/README.md
@@ -2,11 +2,15 @@
 
 PMTiles is a single-file archive format for tiled data. A PMTiles archive can be hosted on a commodity storage platform such as S3, and enables low-cost, zero-maintenance map applications that are "serverless" - free of a custom tile backend or third party provider.
 
-[Protomaps Blog: Dynamic Maps, Static Storage](http://protomaps.com/blog/dynamic-maps-static-storage)
+* [Protomaps Blog: Dynamic Maps, Static Storage](http://protomaps.com/blog/dynamic-maps-static-storage)
 
-[Leaflet + Raster Tiles Demo](https://protomaps.github.io/PMTiles/examples/leaflet.html) - watch your network request log
+* [Leaflet + Raster Tiles Demo](https://protomaps.github.io/PMTiles/examples/leaflet.html) - watch your network request log
 
-[MapLibre GL + Vector Tiles Demo](https://protomaps.github.io/PMTiles/examples/maplibre.html) - requires MapLibre GL JS v1.14.1-rc.2 or later
+* [MapLibre GL + Vector Tiles - US Zip Codes](pmtiles://https://protomaps-static.sfo3.digitaloceanspaces.com/cb_2018_us_zcta510_500k_nolimit.pmtiles)
+
+* [MapLibre GL + Vector Tiles - Basemap](https://protomaps.github.io/PMTiles/examples/maplibre.html)
+
+Demos require MapLibre GL JS v1.14.1-rc.2 or later
 
 See also:
 * [Cloud Optimized GeoTIFFs](https://www.cogeo.org)
diff --git a/examples/maplibre_zipcodes.html b/examples/maplibre_zipcodes.html
new file mode 100644
index 0000000..413fe46
--- /dev/null
+++ b/examples/maplibre_zipcodes.html
@@ -0,0 +1,73 @@
+<html>
+    <head>
+        <meta charset="utf-8" />
+        <meta name="viewport" content="width=device-width, initial-scale=1">
+        <link rel="stylesheet" href="https://unpkg.com/maplibre-gl@1.14.1-rc.2/dist/maplibre-gl.css" crossorigin="anonymous">
+        <script src="https://unpkg.com/maplibre-gl@1.14.1-rc.2/dist/maplibre-gl.js" crossorigin="anonymous"></script>
+        <script src="https://unpkg.com/pmtiles@0.3.1/index.js"></script>
+        <style>
+            body, #map {
+                height:100vh;
+                margin:0px;
+                background-color: #222222;
+            }
+
+            #overlay {
+                position: absolute;
+                top: 0px;
+                padding: 1rem;
+                background-color: white;
+            }
+        </style>
+        <title>zcta - gl</title>
+    </head>
+    <body>
+        <div id="map"></div>
+        <div id="overlay">
+           displaying archive: <a href="https://protomaps-static.sfo3.digitaloceanspaces.com/cb_2018_us_zcta510_500k_nolimit.pmtiles">cb_2018_us_zcta510_500k_nolimit.pmtiles</a>
+           <pre>ogr2ogr -t_srs EPSG:4326 cb_2018_us_zcta510_500k.json cb_2018_us_zcta510_500k.shp
+tippecanoe -zg --projection=EPSG:4326 --no-tile-compression --no-feature-limit --no-tile-size-limit -o cb_2018_us_zcta510_500k_nolimit.mbtiles -l zcta cb_2018_us_zcta510_500k.json
+pmtiles-convert cb_2018_us_zcta510_500k_nolimit.mbtiles cb_2018_us_zcta510_500k_nolimit.pmtiles</pre>
+        </div>
+        <script>
+            pmtiles.addProtocol(maplibregl)
+            var style = {
+                "version": 8,
+                "sources": {
+                    "zcta": {
+                        "type": "vector",
+                        "tiles": ["pmtiles://https://protomaps-static.sfo3.digitaloceanspaces.com/cb_2018_us_zcta510_500k_nolimit.pmtiles/{z}/{x}/{y}"],
+                        "maxzoom":7
+                    }
+                },
+                "layers": [
+                    {
+                        "id": "ztcta_fill",
+                        "type": "fill",
+                        "source":"zcta",
+                        "source-layer":"zcta",
+                        "paint": {
+                            "fill-color":"white"
+                        }
+                    },
+                    {
+                        "id": "zcta_stroke",
+                        "type": "line",
+                        "source":"zcta",
+                        "source-layer":"zcta",
+                        "paint": {
+                            "line-color":"steelblue",
+                            "line-width":0.5
+                        }
+                    }
+                ]
+            }
+            var map = new maplibregl.Map({
+                container: 'map',
+                center: [-101.43,44.34],
+                zoom: 3,
+                style: style
+            });
+        </script>
+    </body>
+</html>
\ No newline at end of file
