ZIP Code 78655 - Martindale Texas
Overview
ZIP Code 78655 is located in Martindale Texas. Portions of 78655 are also in Staples. 78655 is primarily within Caldwell County, with some portions in Guadalupe County. Regionally, 78655 is located in Metro Austin.
ZIP Code 78655 Quick Stats
| ZIP Code Name | Martindale |
| Primary County | Caldwell County |
| ZIP Code Type | Standard |
| Population (2022) | 3,671 |
| Area Code(s) | 512 / 737 |
| Current Time | CDT |
ZIP Code 78655 Map
78655 Demographics
78655 can be classified socioeconomically as Lower Middle Class class compared to other ZIP Codes in Texas based on Median Household Income and Average Adjusted Gross Income. The majority race/ethnicity residing in 78655 is White. The current unemployment level in 78655 is 4.1%.
| Population | 3,671 |
| Population Growth Rate | 8.23% |
| Population Density | 80 People per Square Mile |
| Total Households | 1,074 |
| Percentage High Income Households | 3.5% |
| Median Household Income (2021) | $43,333 |
| Average Adjusted Gross Income (2021) | $455,230 |
| Current Unemployment Rate (May 2026) | 4.1% |
| Sales Tax Rate (2025) | 8.2% |
| Majority Race/Ethnicity | White - 53.85% |
78655 Race/Ethnicity Breakdown
| Race/Ethnicity | Total | Percentage |
|---|---|---|
| White | 2,673 | 53.72% |
| Black | 173 | 3.48% |
| Hispanic | 2,095 | 42.1% |
| Asian | 23 | 0.46% |
| Native American | 0 | 0% |
| Hawaiian/Pac. Islander | 12 | 0.24% |
78655 Educational Attainment Levels
| Highest Education Level | Total | Percentage |
|---|---|---|
| Less Than 1 Year of College | 145 | 8.22% |
| Bachelor Degree | 262 | 14.84% |
| High School Diploma | 627 | 35.52% |
| No High School Diploma | 0 | 0% |
| GED or Alternate | 141 | 7.99% |
| 1 or More Years of College | 282 | 15.98% |
| Associates Degree | 130 | 7.37% |
| Masters Degree | 145 | 8.22% |
| Professional Degree | 17 | 0.96% |
| Doctorate Degree | 16 | 0.91% |
78655 Geography
| Coordinates | 29.80807877, -97.82611847 |
| Adjacent ZIP Codes | |
| Cities/Towns in 78655 | |
| Regions | Metro Austin Metro San Antonio |
| Metropolitan/Micropolitan Stat Areas | San Antonio-New Braunfels, TX Austin-Round Rock-Georgetown, TX |
| Time Zone | Central Daylight Time |
| IANA Timezone | America/Chicago |
| Area | 46 Square Miles |
78655 Schools
| School Districts in 78655 | |
| Elementary Schools in 78655 | |
| Middle Schools in 78655 | |
| High Schools in 78655 |
78655 Weather and Climate Data
| Plant Hardiness Zone | Zone 8b: 15F to 20F | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Average First Frost Date | November 21 - 31 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Average Last Frost Date | March 11 - 20 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Koppen-Geiger Climate Zone | Cfa - Humid Subtropical Climate | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Ecoregion | 32a - Northern Blackland Prairie | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||