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County ZIP codes · New Mexico · FIPS 35045

San Juan County, NM ZIP Codes

San Juan County, New Mexico has 21 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 16 of the residential ones lie mainly in San Juan County and 5 mainly in a neighboring county; 7 cross the county line. Median household income ranges from $19,044 in 87037 (Nageezi) to $79,461 in 87402 (Farmington) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of San Juan County?

81137 · Ignacio: $64k87037 · Nageezi: $19k87313 · Crownpoint: $43k87325 · Tohatchi: $37k87328 · Navajo: $34k87364 · Sheep Springs: $33k87401 · Farmington: $62k87402 · Farmington: $80k87410 · Aztec: $55k87412 · Blanco: $55k87413 · Bloomfield: $50k87415 · Flora Vista: $44k87416 · Fruitland: $50k87417 · Kirtland: $75k87418 · La Plata: $83k87419 · Navajo Dam: $21k87420 · Shiprock: $36k87421 · Waterflow: $51k87455 · Newcomb: $38k87461 · Sanostee: $33k87499 · Farmington: $41k87313874138741287499874208745587416873258732887037811378741987461874108740187364874188742181137 · Ignacio: $64k87037 · Nageezi: $19k87313 · Crownpoint: $43k87325 · Tohatchi: $37k87328 · Navajo: $34k87364 · Sheep Springs: $33k87401 · Farmington: $62k87402 · Farmington: $80k87410 · Aztec: $55k87412 · Blanco: $55k87413 · Bloomfield: $50k87415 · Flora Vista: $44k87416 · Fruitland: $50k87417 · Kirtland: $75k87418 · La Plata: $83k87419 · Navajo Dam: $21k87420 · Shiprock: $36k87421 · Waterflow: $51k87455 · Newcomb: $38k87461 · Sanostee: $33k87499 · Farmington: $41k87313874138741287499874208745587416873258732887037811378741987461874108740187364874188742181137 · Ignacio: $64k87037 · Nageezi: $19k87313 · Crownpoint: $43k87325 · Tohatchi: $37k87328 · Navajo: $34k87364 · Sheep Springs: $33k87401 · Farmington: $62k87402 · Farmington: $80k87410 · Aztec: $55k87412 · Blanco: $55k87413 · Bloomfield: $50k87415 · Flora Vista: $44k87416 · Fruitland: $50k87417 · Kirtland: $75k87418 · La Plata: $83k87419 · Navajo Dam: $21k87420 · Shiprock: $36k87421 · Waterflow: $51k87455 · Newcomb: $38k87461 · Sanostee: $33k87499 · Farmington: $41k87313874138741287499874208745587416873258732887037811378741987461874108740187364
The residential ZIP codes of San Juan 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 $36,800 and $55,189.

They carry 19 postal town names.

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

All 21 residential ZIP codes in San Juan County

16 ZIP codes lie mainly in San Juan County; 5 more reach into it from a neighboring county and follow the first table.

Residential ZIP codes mainly in San Juan County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
87401 Farmington 45,229 341 $62k $215k 100%
87410 Aztec 15,012 57 $55k $193k 100%
87413 Bloomfield 14,296 24 $50k $176k 100%
87402 Farmington 11,418 736 $80k $284k 100%
87420 Shiprock 10,586 19 $36k $104k 100%
87417 Kirtland 6,624 596 $75k $180k 100%
87416 Fruitland 4,546 11 $50k $94k 100%
87415 Flora Vista 2,273 134 $44k $219k 100%
87364 Sheep Springs 1,632 9 $33k $82k 100%
87037 Nageezi 1,481 4 $19k $78k 97%
87455 Newcomb 1,480 4 $38k $23k 100%
87421 Waterflow 1,468 45 $51k $123k 100%
87461 Sanostee 1,307 5 $33k $31k 100%
87499 Farmington 903 2 $41k $83k 100%
87418 La Plata 686 10 $83k $225k 100%
87419 Navajo Dam 458 2 $21k $109k 54%

Partly in San Juan County

Residential ZIP codes mainly in another county that reach at least 1% into San Juan County, by their share here
In this county
87325 Tohatchi 2,178 4 $37k $71k 39%
87328 Navajo 3,043 9 $34k $65k 30%
87412 Blanco 779 2 $55k $130k 28%
81137 Ignacio 5,571 22 $64k $335k 17%
87313 Crownpoint 4,971 7 $43k $71k 11%

Download the 21 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 San Juan County extend into another county. A ZIP code follows mail routes, not county borders.

Share of each ZIP code's land in San Juan County and in the neighboring counties
ZIPIn San JuanElsewhere
8113717%La Plata County 80%; Archuleta County 3%
8731311%McKinley County 89%
8732830%Apache County 39%; McKinley County 32%
8732539%McKinley County 61%
8703797%Rio Arriba County 3%
8741228%Rio Arriba County 72%
8741954%Rio Arriba County 46%

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

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

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. San Juan County's ZIP codes use 4 prefixes: 811, 870, 873 and 874.

Three-digit prefixes of San Juan 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 San Juan County's
PrefixSectional centerHereAll codes
811 Colorado Springs, CO (SCF 808) 1 32
870 Albuquerque, NM (SCF 870) 1 58
873 Albuquerque, NM (SCF 870) 4 24
874 Albuquerque, NM (SCF 870) 15 15

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