ZIP code 37031: Castalian Springs, TN
37031 is a ZIP code in Castalian Springs, Tennessee, mainly in Sumner County, part of the Nashville-Davidson--Murfreesboro--Franklin, TN metro area. About 3,926 people live here.
- Population
- 3,926
- Median household income
- $98,114
- Typical home value
- $422,500+3.2% in 12 months
- Median rent
- —gross, per month
- Median age
- 53.5
- Homeowners
- 94.1%of occupied homes
Shaded: ZIP code 37031's area. Click anywhere on the map to see which ZIP code it's in.
ZIP codes within 10 milesWithin 25 miles
ZIP code 37031 details
| City | Castalian Springs |
|---|---|
| State | Tennessee |
| County | Sumner County (also partly Trousdale County) |
| Metro area | Nashville-Davidson--Murfreesboro--Franklin, TN |
| Time zone | Central Time (UTC−6), observes daylight saving time |
| Type | Standard (delivery area) |
| Land area | 38.3 sq mi, plus 1.8 sq mi of water |
| Population density | 103 people per sq mi |
| Bachelor's degree or higher | 21.2% of adults 25+ |
| Average commute | 29.1 minutes |
| Center coordinates | 36.37746, -86.30117 |
ZIP codes near 37031
| ZIP code | City | Distance | Population |
|---|---|---|---|
| 37087 | Lebanon, TN | 8.0 mi | 56,655 |
| 37066 | Gallatin, TN | 8.7 mi | 64,650 |
| 37074 | Hartsville, TN | 8.9 mi | 10,932 |
| 37022 | Bethpage, TN | 9.5 mi | 5,728 |
| 37088 | Lebanon, TN | 11.7 mi | — |
| 37151 | Riddleton, TN | 15.1 mi | 457 |
| 37071 | Gladeville, TN | 15.3 mi | — |
| 37136 | Norene, TN | 15.3 mi | — |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Buying a home in 37031?
A typical home in ZIP code 37031 is worth about $422,500 (Zillow Home Value Index). The median household here earns $98,114 a year. See what buying here would cost per month, with Tennessee average taxes and insurance filled in.
Monthly payment for a $422,500 homeWhat can a $98,114 income afford?Rental property numbers
About ZIP code 37031
What city is ZIP code 37031?
ZIP code 37031 is in Castalian Springs, TN, in Sumner County.
What county is ZIP code 37031 in?
37031 is mainly in Sumner County, Tennessee, and partly in Trousdale County.
What is the population of ZIP code 37031?
About 3,926 people live in ZIP code 37031, according to the American Community Survey 2020–2024 5-year estimates.
What time zone is ZIP code 37031 in?
37031 is in Central Time (UTC−6). It observes daylight saving time.