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Martindale city, TX

ZIP Code 78655 — Martindale city, TX Demographics & Data

Source: U.S. Census Bureau ACS 2019–2023 5-Year Estimates. Page data updated 2026-08-02.

Working ClassLow Snow Area

Map, Quick Facts & Location

Quick Facts

Local time
Population
3,687
Median Income
$48,409
-36% vs US avg
Home Value
$223,000
-36% vs US avg
Median Rent
$905
-22% vs US avg
Median Age
46.6 yrs
+20% vs US avg
Area Code
Congress
Top Ancestry
GermanEnglishFrench
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Location
Coordinates
29.8161, -97.8351
Elevation
665 ft
Land Area
35.6 sq mi
Water Area
0.2 sq mi (1% water)

At a glance

Population
3,687
Density
N/A
Median income
$48,409
-36% vs US avg
Home value
$223,000
-36% vs US avg
Median rent
$905
-22% vs US avg
Timezone

Overview of ZIP Code 78655

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What to know about ZIP 78655

ZIP code 78655 covers Martindale, TX in Caldwell County with a population of about 3,687.

At a glance, the area shows median age of 46.6 versus a U.S. median of about 38.9.

It sits in telephone area codes 512, 737; U.S. House district TX-27; the AUSTIN media market.

Income and economy in Martindale, TX

Median household income in ZIP 78655 is about $48,409 — about 36% below the U.S. median ($75,149).

On socioeconomic markers, US5 shows a poverty rate of 17.6%; unemployment rate near 13.5%; 20.5% of adults with a bachelor’s degree or higher (about 13.2 points below the national share (33.7%)).

Labor and commute patterns include leading industry context around Administrative support, Construction, and Healthcare; about 4.4% of workers reporting work-from-home (about 10.8 points below the U.S. share (15.2%)); a mean commute of about 180.0 minutes (U.S. average near 26.8).

Housing and affordability in ZIP 78655

Median home value is about $223,000 — about 36% below the U.S. median home value ($348,079).

Housing tenure and rents show median gross rent around $905 (about 22% below the U.S. median rent ($1,163)), and owner-occupancy near 64.0% (about 1.4 points below the national owner-occupancy rate (65.4%)).

To comfortably buy a median-priced home in ZIP 78655 in Martindale, TX, a household would need roughly $61,000 in annual income under a 20% down, 30-year loan at 6.8% (illustrative), keeping housing costs near 28% of income. Estimated monthly PITI is about $1,432. That is about 26% above the local median household income ($48,409), so the median earner would likely stretch or need a larger down payment. Rates, taxes, insurance, and HOA fees vary — treat this as a planning estimate, not a lender quote.

Climate risk and migration signals

FEMA’s National Risk Index rates natural-hazard risk for Martindale city, TX as Relatively Low (composite score 79.8), which is elevated versus much of the country. The strongest component scores on US5 are flood (87.1) and wildfire (68.0). These scores are county-linked NRI values published for planning context — all ZIP codes in the same county share the same composite score on US5. Useful when comparing insurance and disaster exposure across areas, not a substitute for a parcel-level flood or fire determination.

Climate normals for Martindale city, TX show little to no average snow and around 36.5 inches of annual precipitation.

IRS migration statistics show a net inflow of about 174 for ZIP 78655 (Martindale city, TX) on US5’s published series — a signal of people/tax filers moving in relative to those leaving. Inflows often track job growth, housing demand, or lifestyle migration; treat the figure as a directional indicator rather than a precise headcount.

Nearby (from this ZIP)

Airport AUS (28.3 miles (45.6 km)) · Texas State University (8.2 miles (13.2 km)) · El Camino Real de los Tejas National Historic Trail (35.3 miles (56.7 km)) · VA: Seguin CBOC (18.7 miles (30.0 km))

Full lists and map pins are in the Infrastructure section below.