What is the largest city in San Juan County, NM?

Farmington is the largest city or town in San Juan County, with about 46,314 residents.

How many ZIP codes are in San Juan County?

San Juan County includes 16 ZIP Code Tabulation Areas, including 87037, 87364, 87401, 87402, 87410.

What is the population of San Juan County, NM?

About 120,942 people live in San Juan County, based on American Community Survey 5-year estimates.

What counties border San Juan County?

San Juan County borders Sandoval County, McKinley County, Apache County, AZ, La Plata County, CO, Rio Arriba County, Montezuma County, CO, San Juan County, UT, Archuleta County, CO.

San Juan County, NM: Cities, ZIP Codes & Local Data

Population

120,942

Land area

5,517sq mi

People per sq mi

22

ZIP codes

16

San Juan County at a glance

San Juan County is 25% denser than New Mexico as a whole.
It is the 5th most populous of 33 counties in New Mexico.
Households here earn a median of $55,872 a year, 13% less than the New Mexico figure of $64,059.
A typical owner-occupied home is valued at $193,800 (22% below New Mexico) and median rent is $956 a month.
The biggest population centers are Farmington (46,314), Shiprock (7,610) and Bloomfield (7,395).

Local data for San Juan County, NM

Counts from official public data

Housing and community stats

San Juan County, NM, American Community Survey 2020-2024

Full profile

Median household income

$55,872

Poverty rate

23.1%

Median home value

$193,800

Prices +6.2% in a year

Median rent

$956/mo

Homeownership

71.2%

Bachelor's or higher

18.3%

Median age

38.3

Average commute

24.2 min

Largest reported origins and ancestries: Mexican Americans (12,492), German Americans (9,555), Irish Americans (6,673).

Home values and rents Income, education and commute

Economy and federal money

Jobs, income, federal spending and pandemic loans

Details

Unemployment rate

5.1%

Sep 2026, +0.8 pts in a year

Average annual pay

$58,822

47,793 jobs, 2025

Income per person

$47,931

BEA, 2024

Federal spending

$1.2B

FY 2026, $9,767 per person

PPP loans

$233M

1,944 loans, 23,869 jobs reported

Campaign donations

$386K

Itemized, 2026 cycle

Economy Federal spending PPP loans

How people get to work

San Juan County, NM, workers 16 and older. American Community Survey 5-year estimates

Drove alone83.4%
Carpooled7.0%
Public transit0.2%
Walked2.6%
Bicycle0.1%
Taxi, ride-hailing, motorcycle or other0.5%
Worked from home6.3%

Average one-way commute: 24.2 minutes for people who do not work from home.

Environment and hazard risk

San Juan County, NM, from FEMA, NOAA and EPA

Full report

Natural hazard risk

Relatively Moderate

Top: drought

Storm events since 1996

423

Most often drought

Flood insurance policies

135

0.3% of homes, county

July high / Jan low

90° / 20°F

7.9 inches of rain a year

Hazards, floods and storm history Check a flood zone 17 historic places

Health statistics

Share of adults in San Juan County, NM, CDC PLACES estimates

All 40 measures

Obesity

35.1%

U.S. 33.3% +1.8 pts

Diabetes

14.5%

U.S. 12.1% +2.4 pts

Smoking

20.1%

U.S. 12.8% +7.3 pts

Uninsured (18-64)

12.9%

U.S. 11.1% +1.8 pts

Cities, towns and ZIP codes in San Juan County

Population shown

Frequently asked questions

What is the largest city in San Juan County, NM?: Farmington is the largest city or town in San Juan County, with about 46,314 residents.
How many ZIP codes are in San Juan County?: San Juan County includes 16 ZIP Code Tabulation Areas, including 87037, 87364, 87401, 87402, 87410.
What is the population of San Juan County, NM?: About 120,942 people live in San Juan County, based on American Community Survey 5-year estimates.
What counties border San Juan County?: San Juan County borders Sandoval County, McKinley County, Apache County, AZ, La Plata County, CO, Rio Arriba County, Montezuma County, CO, San Juan County, UT, Archuleta County, CO.