Plain

County ZIP codes · Texas · FIPS 48107

Crosby County, TX ZIP Codes

Crosby County, Texas has 9 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 3 of the residential ones lie mainly in Crosby County and 6 mainly in a neighboring county; 7 cross the county line. Median household income ranges from $48,750 in 79370 (Spur) to $57,993 in 79357 (Ralls) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Crosby County?

79235 · Floydada: $53k79243 · McAdoo: $61k79250 · Petersburg: $55k79322 · Crosbyton: $49k79343 · Lorenzo: $59k79356 · Post: $46k79357 · Ralls: $58k79364 · Slaton: $57k79370 · Spur: $49k79356792357937079364793227935779250793437924379235 · Floydada: $53k79243 · McAdoo: $61k79250 · Petersburg: $55k79322 · Crosbyton: $49k79343 · Lorenzo: $59k79356 · Post: $46k79357 · Ralls: $58k79364 · Slaton: $57k79370 · Spur: $49k79356792357937079364793227935779250793437924379235 · Floydada: $53k79243 · McAdoo: $61k79250 · Petersburg: $55k79322 · Crosbyton: $49k79343 · Lorenzo: $59k79356 · Post: $46k79357 · Ralls: $58k79364 · Slaton: $57k79370 · Spur: $49k7935679235793707936479322793577925079243
The residential ZIP codes of Crosby 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?

The middle half of its ranked ZIP codes (1,000+ people living in households) report median household incomes between $48,750 and $56,538.

They carry 9 postal town names.

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

All 9 residential ZIP codes in Crosby County

3 ZIP codes lie mainly in Crosby County; 6 more reach into it from a neighboring county and follow the first table.

Residential ZIP codes mainly in Crosby County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
79322 Crosbyton 1,983 8 $49k $66k 100%
79357 Ralls 1,810 8 $58k $76k 100%
79343 Lorenzo 1,233 10 $59k $120k 64%

Partly in Crosby County

Residential ZIP codes mainly in another county that reach at least 1% into Crosby County, by their share here
In this county
79243 McAdoo 26 0 $61k $113k 34%
79356 Post 5,083 6 $46k $80k 15%
79370 Spur 1,363 3 $49k $63k 14%
79250 Petersburg 980 6 $55k $79k 11%
79235 Floydada 2,924 6 $53k $96k 8%
79364 Slaton 7,129 34 $57k $89k 5%

Download the 9 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?

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

Share of each ZIP code's land in Crosby County and in the neighboring counties
ZIPIn CrosbyElsewhere
793645%Lubbock County69%; Lynn County17%; Garza County9%
7935615%Garza County76%; Lynn County9%
792358%Floyd County88%; Motley County4%
7937014%Dickens County62%; Kent County20%; Garza County5%
7934364%Lubbock County36%
7925011%Hale County58%; Floyd County19%; Lubbock County12%
7924334%Dickens County66%

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

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

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Crosby County's ZIP codes use 2 prefixes: 792 and 793.

Three-digit prefixes of Crosby 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 Crosby County's
PrefixSectional centerHereAll codes
792Amarillo, TX (SCF 790)332
793Lubbock, TX (SCF 793)648

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