| ZIP Code | 37031 |
|---|---|
| City | Castalian Springs |
| State | Tennessee (TN) |
| County | Sumner County |
| Area Code | 615/629 |
| Elevation | 625 ft |
| Latitude | 36.377463 |
|---|---|
| Longitude | -86.301172 |
| Timezone | Chicago (DST) |
| FIPS | 47165 |
| ZIP Type | Standard |
| Status | Active |
Race & Ethnicity
Age Breakdown
Key Indicators
| Median Age | 49.8 yrs ↑ 18% since 2019 |
|---|---|
| Avg Household Size | 2.37 |
| Below Poverty | 6.3% ▼ 38% below avg |
| College Grads | 30.1% ▼ 22% below avg |
| Unemployment | 0.7% ▼ 86% below avg |
| No HS Diploma | 32 (1%) |
| HS Graduate | 1,312 (43%) |
| Some College | 531 (17.4%) |
| Associates | 256 (8.4%) |
| Bachelors | 245 (8%) |
| Graduate Degree | 672 (22%) |
Education
Housing Tenure
Home Value Distribution
Financials
| Median HH Income | $86,380 ▲ 13% above avg ↑ 17% since 2019 |
|---|---|
| Median Home Value | $303,200 ▲ 9% above avg ↑ 60% since 2019 |
| Home/Income Ratio | 3.5x (nat avg ~3.5x) |
| Median Rent | $1,005/mo ↑ 13% since 2019 |
| Total Units | 1,780 |
| Vacant Units | 111 |
| Avg HH Size | 2.37 |
Income Distribution
How People Get to Work
Commute Time
Year Built
Summary
| Total Units | 1,780 |
|---|---|
| Vacant | 111 |
| Owner Occupied | 92.9% |
| Renter Occupied | 7.1% |
| Avg HH Size | 2.37 |
ZIP code 37031 is located in Castalian Springs, Tennessee, within Sumner County. With a population of 3,984, this is a sparsely populated ZIP code with a mature community — the median age is 49.8 years. Economically, 37031 is a middle-income ZIP code: the median household income of $86,380 is near the national average.
Real estate in ZIP code 37031 represents a mid-range housing market. The median home value of $303,200 is near the national average. Renters can expect to pay around $1,005 per month in median rent. Homeownership is strong here — 92.9% of occupied units are owner-occupied, suggesting an established, stable residential community. Median home values have increased by 60% since 2019.
The population of 37031 is primarily White (90.51%). Residents are moderately educated — 30.1% hold a bachelor's degree or higher, which is below the national average. Poverty affects a relatively small share of residents at 6.3%. Household income has grown by 17% since 2019.
The unemployment rate in 37031 stands at 0.7%, which is well below the national average. About 12% of workers are remote. As in most parts of the country, driving alone is the dominant commute mode at 73%.
Overall, ZIP code 37031 in Castalian Springs, TN is characterized as middle-income, moderately educated, a mature community, and predominantly owner-occupied. With 3,984 residents, a median household income of $86,380, and a median home value of $303,200, it offers a clear picture of life in this part of Tennessee.