ZIP code 37031
Where is ZIP code 37031?
Castalian Springs, Tennessee
Sumner County · Standard ZIP code
ZIP code 37031 belongs to Castalian Springs, Tennessee in Sumner County. 37031 is a standard ZIP code, so it covers street addresses as well as PO Boxes. It is in the Central Time zone and uses area codes 615 and 629. About 3,926 people live in the 37031 area, where the median household income is $98,114. The closest ZIP codes are 37066 (Gallatin, 7.8 mi west), 37074 (Hartsville, 7.9 mi east) and 37022 (Bethpage, 9.5 mi north).
| ZIP code | 37031 |
|---|---|
| Type | Standard ZIP code for street addresses and PO Boxes |
| Status | Active |
| City | Castalian Springs |
| Also accepted | Castalin Spgs |
| State | Tennessee (TN) |
| County | Sumner County |
| Time zone | Central Time · now |
| Area codes | 615, 629 |
| Coordinates | 36.3806, -86.3107 map |
| 3-digit prefix | 370 |
Population and income in 37031
| Population | 3,926 · lower than 54% of Tennessee ZIP codes |
|---|---|
| People per square mile | 103 · higher than 55% of Tennessee ZIP codes |
| Median age | 53.5 years · higher than 92% of Tennessee ZIP codes |
| Men / women | 50% / 50% |
| Median household income | $98,114 · higher than 92% of Tennessee ZIP codes |
| Income per person | $44,690 |
| Below the poverty line | 8.3% |
| Bachelor’s degree or higher | 21% of adults 25+ |
| Median home value | $352,600 · higher than 85% of Tennessee ZIP codes |
| Housing units | 1,804 |
| Households | 1,707 (2.29 people on average) |
| Owners / renters | 94% / 5.9% |
| Land area | 38.25 sq mi (plus 1.76 sq mi of water) |
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024) for ZIP Code Tabulation Area 37031. Census ZIP areas are close to, but not exactly the same as, USPS delivery areas.
ZIP codes near 37031
| ZIP code | City | Distance | Type |
|---|---|---|---|
| 37066 | Gallatin, TN | 7.8 mi W | Standard |
| 37074 | Hartsville, TN | 7.9 mi E | Standard |
| 37022 | Bethpage, TN | 9.5 mi N | Standard |
| 37087 | Lebanon, TN | 11.8 mi S | Standard |
| 37088 | Lebanon, TN | 12 mi S | PO Box only |
| 37186 | Westmoreland, TN | 14.1 mi N | Standard |
| 37057 | Dixon Springs, TN | 15 mi E | Standard |
| 37071 | Gladeville, TN | 15.5 mi S | PO Box only |
| 37136 | Norene, TN | 15.5 mi S | PO Box only |
| 37151 | Riddleton, TN | 15.6 mi E | Standard |
| 37148 | Portland, TN | 16.9 mi NW | Standard |
| 37122 | Mount Juliet, TN | 17 mi SW | Standard |
Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 37031 or measure the distance to another ZIP code.
How to address mail to 37031
123 MAIN ST
CASTALIAN SPRINGS TN 37031
Put the city, the two-letter state code and the ZIP code on the last line. USPS also accepts CASTALIN SPGS as the city name for 37031. Avoid Castalian Spg: USPS doesn’t recognize it as the city for this ZIP code. Adding the 4-digit ZIP+4 code (37031-XXXX) helps mail sort faster but isn’t required.
Questions
- What city is ZIP code 37031?
- 37031 is a Castalian Springs, Tennessee ZIP code. Castalin Spgs is also accepted as the city name.
- What county is 37031 in?
- ZIP code 37031 is in Sumner County, Tennessee.
- What time zone is ZIP code 37031 in?
- 37031 is in the Central Time zone (America/Chicago).
- What area code is 37031?
- Phone numbers in ZIP code 37031 use area codes 615 and 629.
- What is the population of ZIP code 37031?
- About 3,926 people live in ZIP code 37031, according to the Census Bureau’s American Community Survey (2020–2024).
- What is the median income in 37031?
- The median household income in 37031 is $98,114 a year, higher than 92% of Tennessee ZIP codes.
- What ZIP codes are near 37031?
- The nearest ZIP codes to 37031 are 37066 (Gallatin, 7.8 miles), 37074 (Hartsville, 7.9 miles), 37022 (Bethpage, 9.5 miles) and 37087 (Lebanon, 11.8 miles).