ZIP code 78661
Where is ZIP code 78661?
Prairie Lea, Texas
Caldwell County · PO Box only ZIP code
ZIP code 78661 belongs to Prairie Lea, Texas in Caldwell County. 78661 is a PO Box only ZIP code: it is used for post office boxes at the Prairie Lea post office, not for street addresses. It is in the Central Time zone and uses area codes 512, 737 and 830. About 835 people live in the 78661 area, where the median household income is $82,896. The closest ZIP codes are 78622 (Fentress, 2.9 mi northwest), 78670 (Staples, 5.5 mi northwest) and 78638 (Kingsbury, 6.2 mi southwest).
| ZIP code | 78661 |
|---|---|
| Type | PO Box only (no street delivery) |
| Status | Active |
| City | Prairie Lea |
| State | Texas (TX) |
| County | Caldwell County |
| Time zone | Central Time · now |
| Area codes | 512, 737, 830 |
| Coordinates | 29.7239, -97.7449 map |
| 3-digit prefix | 786 |
Population and income in 78661
| Population | 835 · lower than 78% of Texas ZIP codes |
|---|---|
| People per square mile | 202 · higher than 59% of Texas ZIP codes |
| Median age | 27.1 years · lower than 95% of Texas ZIP codes |
| Men / women | 53% / 47% |
| Median household income | $82,896 · higher than 69% of Texas ZIP codes |
| Income per person | $26,002 |
| Below the poverty line | 29% |
| Bachelor’s degree or higher | 9.0% of adults 25+ |
| Median home value | $209,700 · higher than 50% of Texas ZIP codes |
| Housing units | 241 |
| Households | 233 (3.58 people on average) |
| Owners / renters | 91% / 8.6% |
| Land area | 4.12 sq mi (plus 0.08 sq mi of water) |
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024) for ZIP Code Tabulation Area 78661. Census ZIP areas are close to, but not exactly the same as, USPS delivery areas.
ZIP codes near 78661
| ZIP code | City | Distance | Type |
|---|---|---|---|
| 78622 | Fentress, TX | 2.9 mi NW | PO Box only |
| 78670 | Staples, TX | 5.5 mi NW | PO Box only |
| 78638 | Kingsbury, TX | 6.2 mi SW | Standard |
| 78648 | Luling, TX | 6.4 mi SE | Standard |
| 78655 | Martindale, TX | 10.2 mi NW | Standard |
| 78644 | Lockhart, TX | 12 mi N | Standard |
| 78656 | Maxwell, TX | 12.6 mi N | Standard |
| 78658 | Ottine, TX | 12.8 mi SE | PO Box only |
| 78604 | Belmont, TX | 14.3 mi S | PO Box only |
| 78156 | Seguin, TX | 15.6 mi SW | PO Box only |
| 78666 | San Marcos, TX | 15.7 mi NW | Standard |
| 78632 | Harwood, TX | 15.8 mi E | Standard |
Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 78661 or measure the distance to another ZIP code.
How to address mail to 78661
PO BOX 123
PRAIRIE LEA TX 78661
Put the city, the two-letter state code and the ZIP code on the last line. Adding the 4-digit ZIP+4 code (78661-XXXX) helps mail sort faster but isn’t required.
Questions
- What city is ZIP code 78661?
- 78661 is a Prairie Lea, Texas ZIP code.
- What county is 78661 in?
- ZIP code 78661 is in Caldwell County, Texas.
- What time zone is ZIP code 78661 in?
- 78661 is in the Central Time zone (America/Chicago).
- What area code is 78661?
- Phone numbers in ZIP code 78661 use area codes 512, 737 and 830.
- What is the population of ZIP code 78661?
- About 835 people live in ZIP code 78661, according to the Census Bureau’s American Community Survey (2020–2024).
- What is the median income in 78661?
- The median household income in 78661 is $82,896 a year, higher than 69% of Texas ZIP codes.
- Can I use 78661 for a street address?
- No. 78661 is only for PO Boxes. Street addresses in Prairie Lea use another ZIP code.
- What ZIP codes are near 78661?
- The nearest ZIP codes to 78661 are 78622 (Fentress, 2.9 miles), 78670 (Staples, 5.5 miles), 78638 (Kingsbury, 6.2 miles) and 78648 (Luling, 6.4 miles).