ZIP code · Castalian Springs · Tennessee · United States
ZIP code 37031 — Castalian Springs
ZIP code 37031 serves Castalian Springs, Tennessee.
- Postal code
- 37031Single source Value from one source, not cross-checked.
- County
- Sumner FIPS 47165
- State
- Tennessee
- Country
- United States
- Coordinates
- 36.3806, -86.3107 — precision precise (locality)
View on OpenStreetMap - Population
- 3,984 (ZCTA, ACS 5-year)
- Population density
- 104 / sq mi
- Land area
- 38.3 sq mi (99.1 km²) (ZCTA, ACS 5-year)
- Median household income
- $86,380
- Per-capita income
- $44,811
- Median age
- 49.8
- Households
- 1,669
- Housing units
- 1,780
- Median home value
- $303,200
- Median gross rent
- $1,005 / month
- Congressional district
- TN-6 (119th Congress)
- USDA hardiness zone
- 7b (5 to 10 °F)Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
- Time zone
- America/Chicago (UTC−6 / UTC−5 DST)
Tools: compare 37031 with another ZIP · ZIPs within 25 miles · distance from 37031
Map of ZIP code 37031
Climate — monthly normals
Warmest month Jul (avg high 88°F), coldest Jan (avg low 25°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 45 | 50 | 59 | 69 | 77 | 84 | 88 | 87 | 82 | 71 | 59 | 49 |
| Avg low °F | 25 | 28 | 34 | 43 | 53 | 62 | 67 | 65 | 57 | 44 | 34 | 28 |
| Precip in | 4.4 | 4.7 | 4.9 | 5.2 | 5.7 | 4.6 | 5.2 | 3.8 | 3.7 | 3.8 | 3.9 | 5.0 |
NOAA 1991–2020 climate normals from the nearest station: BETHPAGE 1 S (5.4 mi) · NOAA NCEI
Places in ZIP 37031
- 1 schools
- 1 post offices
- 8 places of worship
Places mapped inside this ZIP’s ZCTA area in OpenStreetMap. OSM is community-maintained: counts reflect what has been mapped, and completeness varies by area — treat them as at-least figures. © OpenStreetMap contributors (ODbL) · Methodology
About this page
US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.
GeoNames · U.S. Census Bureau (ACS) · U.S. Census Bureau · NOAA NCEI · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page