ZIP code 78631
Where is ZIP code 78631?
Harper, Texas
Gillespie County · Standard ZIP code
ZIP code 78631 belongs to Harper, Texas in Gillespie County. 78631 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 325 and 830. About 3,465 people live in the 78631 area, where the median household income is $78,560. The closest ZIP codes are 78618 (Doss, 13.1 mi north), 78025 (Ingram, 14.5 mi south) and 78058 (Mountain Home, 16.4 mi southwest).
| ZIP code | 78631 |
|---|---|
| Type | Standard ZIP code for street addresses and PO Boxes |
| Status | Active |
| City | Harper |
| State | Texas (TX) |
| County | Gillespie County |
| Time zone | Central Time · now |
| Area codes | 325, 830 |
| Coordinates | 30.2816, -99.241 map |
| 3-digit prefix | 786 |
Population and income in 78631
| Population | 3,465 · lower than 58% of Texas ZIP codes |
|---|---|
| People per square mile | 12 · lower than 78% of Texas ZIP codes |
| Median age | 43.4 years · higher than 73% of Texas ZIP codes |
| Men / women | 58% / 42% |
| Median household income | $78,560 · higher than 64% of Texas ZIP codes |
| Income per person | $35,226 |
| Below the poverty line | 11% |
| Bachelor’s degree or higher | 24% of adults 25+ |
| Median home value | $351,600 · higher than 82% of Texas ZIP codes |
| Median rent | $1,304 a month |
| Housing units | 1,571 |
| Households | 1,269 (2.73 people on average) |
| Owners / renters | 84% / 16% |
| Land area | 299.77 sq mi (plus 0.17 sq mi of water) |
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024) for ZIP Code Tabulation Area 78631. Census ZIP areas are close to, but not exactly the same as, USPS delivery areas.
ZIP codes near 78631
| ZIP code | City | Distance | Type |
|---|---|---|---|
| 78618 | Doss, TX | 13.1 mi N | Standard |
| 78025 | Ingram, TX | 14.5 mi S | Standard |
| 78058 | Mountain Home, TX | 16.4 mi SW | Standard |
| 78028 | Kerrville, TX | 17.6 mi S | Standard |
| 78029 | Kerrville, TX | 18.2 mi S | PO Box only |
| 78624 | Fredericksburg, TX | 21.5 mi E | Standard |
| 78024 | Hunt, TX | 24.1 mi SW | Standard |
| 78010 | Center Point, TX | 26.3 mi SE | Standard |
| 78013 | Comfort, TX | 29.6 mi SE | Standard |
| 78055 | Medina, TX | 30.4 mi S | Standard |
| 76856 | Mason, TX | 31.9 mi N | Standard |
| 76849 | Junction, TX | 33 mi NW | Standard |
Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 78631 or measure the distance to another ZIP code.
How to address mail to 78631
123 MAIN ST
HARPER TX 78631
Put the city, the two-letter state code and the ZIP code on the last line. Avoid Knoxville and Noxville: USPS doesn’t recognize them as the city for this ZIP code. Adding the 4-digit ZIP+4 code (78631-XXXX) helps mail sort faster but isn’t required.
Questions
- What city is ZIP code 78631?
- 78631 is a Harper, Texas ZIP code.
- What county is 78631 in?
- ZIP code 78631 is in Gillespie County, Texas.
- What time zone is ZIP code 78631 in?
- 78631 is in the Central Time zone (America/Chicago).
- What area code is 78631?
- Phone numbers in ZIP code 78631 use area codes 325 and 830.
- What is the population of ZIP code 78631?
- About 3,465 people live in ZIP code 78631, according to the Census Bureau’s American Community Survey (2020–2024).
- What is the median income in 78631?
- The median household income in 78631 is $78,560 a year, higher than 64% of Texas ZIP codes.
- What ZIP codes are near 78631?
- The nearest ZIP codes to 78631 are 78618 (Doss, 13.1 miles), 78025 (Ingram, 14.5 miles), 78058 (Mountain Home, 16.4 miles) and 78028 (Kerrville, 17.6 miles).