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County ZIP codes · Texas · FIPS 48255

Karnes County, TX ZIP Codes

Karnes County, Texas has 10 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 7 of the residential ones lie mainly in Karnes County and 3 mainly in a neighboring county; 6 cross the county line. Median household income ranges from $50,250 in 78140 (Nixon) to $60,711 in 78118 (Karnes City) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Karnes County?

78111 · Ecleto: –78113 · Falls City: $79k78116 · Gillett: $89k78117 · Hobson: –78118 · Karnes City: $61k78119 · Kenedy: $63k78140 · Nixon: $50k78141 · Nordheim: $44k78144 · Panna Maria: –78151 · Runge: $27k781197811378118781407815178116781177814178111 · Ecleto: –78113 · Falls City: $79k78116 · Gillett: $89k78117 · Hobson: –78118 · Karnes City: $61k78119 · Kenedy: $63k78140 · Nixon: $50k78141 · Nordheim: $44k78144 · Panna Maria: –78151 · Runge: $27k781197811378118781407815178116781177814178111 · Ecleto: –78113 · Falls City: $79k78116 · Gillett: $89k78117 · Hobson: –78118 · Karnes City: $61k78119 · Kenedy: $63k78140 · Nixon: $50k78141 · Nordheim: $44k78144 · Panna Maria: –78151 · Runge: $27k7811978113781187814078151781167811778141
The residential ZIP codes of Karnes County (whole outlines, including the parts in neighboring counties), shaded by median household income in national fifths (ACS 2020-2024). <$54.1k$98.1k+no figure

Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).

How different are its ZIP codes?

They carry 10 postal town names.

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).

All 10 residential ZIP codes in Karnes County

7 ZIP codes lie mainly in Karnes County; 3 more reach into it from a neighboring county and follow the first table.

Residential ZIP codes mainly in Karnes County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
78119 Kenedy 7,270 22 $63k $147k 55%
78118 Karnes City 4,676 24 $61k $104k 89%
78151 Runge 1,378 13 $27k $101k 95%
78117 Hobson 661 9 – $324k 100%
78116 Gillett 226 2 $89k $332k 100%
78144 Panna Maria 47 21 – – 100%
78111 Ecleto no residents 0 – – 100%

Partly in Karnes County

Residential ZIP codes mainly in another county that reach at least 1% into Karnes County, by their share here
In this county
78113 Falls City 3,026 10 $79k $300k 28%
78141 Nordheim 868 11 $44k $76k 22%
78140 Nixon 3,474 20 $50k $85k 2%

Download the 10 ZIP codes as CSV

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; county shares by land area (Census 2020 ZCTA-county relationship file).

Which ZIP codes cross the county line?

6 ZIP codes of Karnes County extend into another county. A ZIP code follows mail routes, not county borders.

Share of each ZIP code's land in Karnes County and in the neighboring counties
ZIPIn KarnesElsewhere
7811955%Bee County 34%; Live Oak County 12%
7811889%Live Oak County 7%; Atascosa County 3%
781402%Gonzales County 68%; Wilson County 27%; Guadalupe County 3%
7811328%Wilson County 40%; Atascosa County 32%
7815195%DeWitt County 5%
7814122%DeWitt County 78%

Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).

Which first three digits do Karnes County's ZIP codes use?

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Every ZIP code of Karnes County starts with 781.

Three-digit prefixes of Karnes County's ZIP codes, the sectional center for each (USPS labeling list L005, effective October 1, 2026) and how many of the prefix's codes are Karnes County's
PrefixSectional centerHereAll codes
781 San Antonio, TX (SCF 780) 10 46

Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.