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County ZIP codes · Texas · FIPS 48205

Hartley County, TX ZIP Codes

Hartley County, Texas has 4 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 2 of the residential ones lie mainly in Hartley County and 2 mainly in a neighboring county; 3 cross the county line. Median household income ranges from $64,652 in 79029 (Dumas) to $72,286 in 79022 (Dalhart) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Hartley County?

79018 · Channing: $77k79022 · Dalhart: $72k79029 · Dumas: $65k79044 · Hartley: $66k7902279018790297904479018 · Channing: $77k79022 · Dalhart: $72k79029 · Dumas: $65k79044 · Hartley: $66k7902279018790297904479018 · Channing: $77k79022 · Dalhart: $72k79029 · Dumas: $65k79044 · Hartley: $66k79022790187902979044
The residential ZIP codes of Hartley 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 4 postal town names: Dumas, Dalhart, Hartley, Channing.

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

All 4 residential ZIP codes in Hartley County

2 ZIP codes lie mainly in Hartley County; 2 more reach into it from a neighboring county and follow the first table.

Residential ZIP codes mainly in Hartley County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
79044 Hartley 583 3 $66k $185k 100%
79018 Channing 367 1 $77k $106k 65%

Partly in Hartley County

Residential ZIP codes mainly in another county that reach at least 1% into Hartley County, by their share here
In this county
79022 Dalhart 10,826 6 $72k $172k 42%
79029 Dumas 15,411 51 $65k $162k 2%

Download the 4 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?

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

Share of each ZIP code's land in Hartley County and in the neighboring counties
ZIPIn HartleyElsewhere
790292%Moore County98%
7902242%Dallam County58%
7901865%Moore County19%; Oldham County16%

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

Which first three digits do Hartley 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 Hartley County starts with 790.

Three-digit prefixes of Hartley 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 Hartley County's
PrefixSectional centerHereAll codes
790Amarillo, TX (SCF 790)474

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