ZIP code · Prairie Lea · Texas · United States
ZIP code 78661 — Prairie Lea
ZIP code 78661 serves Prairie Lea, Texas.
- Postal code
- 78661Single source Value from one source, not cross-checked.
- City
- Prairie Lea
- County
- Caldwell FIPS 48055
- State
- Texas
- Country
- United States
- Coordinates
- 29.7239, -97.7449 — precision precise (locality)
View on OpenStreetMap - Population
- 658 (ZCTA, ACS 5-year)
- Population density
- 160 / sq mi
- Land area
- 4.1 sq mi (10.7 km²) (ZCTA, ACS 5-year)
- Median household income
- $47,917
- Per-capita income
- $24,287
- Median age
- 27.7
- Households
- 209
- Housing units
- 217
- Median home value
- $190,200
- Congressional district
- TX-27 (119th Congress)
- USDA hardiness zone
- 9a (20 to 25 °F)Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
- Time zone
- America/Chicago (UTC−6 / UTC−5 DST)
Tools: compare 78661 with another ZIP · ZIPs within 25 miles · distance from 78661
Map of ZIP code 78661
Climate — monthly normals
Warmest month Aug (avg high 98°F), coldest Jan (avg low 40°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 64 | 68 | 74 | 81 | 88 | 94 | 97 | 98 | 92 | 84 | 73 | 65 |
| Avg low °F | 40 | 43 | 50 | 57 | 66 | 72 | 74 | 73 | 68 | 58 | 48 | 41 |
| Precip in | 2.4 | 2.2 | 2.7 | 2.9 | 4.2 | 3.5 | 1.9 | 2.6 | 3.4 | 4.2 | 2.6 | 2.8 |
NOAA 1991–2020 climate normals from the nearest station: LULING (6.2 mi) · NOAA NCEI
Places in ZIP 78661
- 1 places of worship
Places mapped inside this ZIP’s ZCTA area in OpenStreetMap. OSM is community-maintained: counts reflect what has been mapped, and completeness varies by area — treat them as at-least figures. © OpenStreetMap contributors (ODbL) · Methodology
About this page
US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.
GeoNames · U.S. Census Bureau (ACS) · U.S. Census Bureau · NOAA NCEI · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page