Few parks or trails are on the map in Castle Hill
59% of residents live within a half mile of a park.
Ahead of 7% of U.S. towns. What drives it
How much outdoors does Castle Hill have?
On conserved land, trails, park land and how close residents live to a park, Castle Hill is ahead of 7% of U.S. towns. All four inputs are below most U.S. towns; the share of residents near a park comes closest.
PAD-US, OpenStreetMap (© OpenStreetMap contributors), Census 2025 Gazetteer and 2020 blocks; details in Sources below. How TownRatings grades the outdoors →
Conserved land, trails & bike routes
Tap a number to zoom to a park. Tap a layer to hide it.
The best walking months in Castle Hill: April to August
NOAA’s 1991–2020 normals for the town and the daylight at its latitude. Outlined months have long days, highs of 59 to 86 °F and little rain for the place.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 9.8 | 10.7 | 11.8 | 13.1 | 14.2 | 14.8 | 14.5 | 13.6 | 12.4 | 11.1 | 10.1 | 9.5 |
| High (°F) | 56 | 60 | 64 | 68 | 73 | 80 | 84 | 84 | 83 | 75 | 64 | 56 |
| Rain (in) | 4.8 | 4.5 | 3.7 | 1.6 | 0.8 | 0.1 | 0.0 | 0.0 | 0.1 | 1.1 | 2.4 | 4.8 |
July is the driest month (under 0.1 in) and the warmest (highs of 84 °F). 4.8 inches fall in December, the wettest month. The climate in Castle Hill →
Castle Hill and its neighbors
Tap a town to see its outdoors.
| Town | Conserved of land | Trail mi per sq mi | Park acres per 1,000 | Near a park ½ mile | Outdoors |
|---|---|---|---|---|---|
| Castle Hill | under 1% | under 0.1 | under 1 | 59% | D |
| Alamo | 5% | 1.1 | 20 | 80% | A− |
| Walnut Creek | 24% | 4.1 | 42 | 83% | A+ |
The four inputs of the Outdoors grade, from the engine; shares are of land, not water.
Questions about parks and trails in Castle Hill
How much of Castle Hill is conserved land?
under 1% of its land, against a typical 4% for a California town and 4% nationally (PAD-US). Conserved doesn’t always mean open to visitors: easements are usually private land.
Is there public land near Castle Hill?
48,717 acres of parks and open public land lie inside Castle Hill or within 10 miles of it (PAD-US), almost none of it inside the town line.
How much outdoors does Castle Hill have?
Ahead of 7% of U.S. towns on the Outdoors grade. The grade combines the share of land that is conserved, miles of mapped trail per square mile of land, park acres per 1,000 residents and the share of residents within a half mile of a park. It’s a character grade, so it isn’t part of the overall grade. How it works.
Trail talk
Conditions, parking and favorite walks from Castle Hill neighbors.
Where this page comes from
Conserved and public land: USGS Protected Areas Database of the United States (PAD-US), service updated July 2026. Parks, trails, playgrounds, beaches and other places: OpenStreetMap (© OpenStreetMap contributors, ODbL), map data as of 2026-10-28. Land and water area: Census 2025 Gazetteer. Residents near a park: 2020 Census blocks. National Register: National Park Service. How TownRatings grades the outdoors →