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San Juan County, NM Demographics

San Juan County, NM is the 5th most populous of 33 counties in New Mexico, with 121,661 residents across 5,517 square miles. That is about 22 people per square mile.

At the 2020 census

Population 121,661
Land area 5,517 sq mi
Density 22 / sq mi

Data: 2020 Census · American Community Survey 2024

How San Juan County compares to the US

We're computing this county's comparison table — check back shortly. Population, land area, and density above are already exact.

Central Location: San Juan County, NM

Measured from the county's main population center using 2020 census blocks.

We're computing the drive-time and radius areas around San Juan County, NM — check back shortly. Meanwhile you can drop a pin anywhere in the radius tool.

Census tracts in San Juan County, NM

Name Population Sq mi Per sq mi
Census Tract 9428.02 5,739 16.3 352
Census Tract 2.02 5,353 8.9 603
Census Tract 9432.01 5,229 1,674.7 3
Census Tract 4.01 5,046 3.9 1,306
Census Tract 3.01 5,044 1.2 4,348
Census Tract 2.01 4,812 5.3 910
Census Tract 1 4,509 5.0 910
Census Tract 9430 4,326 622.7 7
Census Tract 9429 4,283 951.9 4
Census Tract 7.07 4,033 11.1 363
Census Tract 2.06 4,026 1.2 3,283
Census Tract 4.02 3,986 1.9 2,071
Census Tract 6.10 3,935 18.5 213
Census Tract 5.03 3,887 5.6 690
Census Tract 7.08 3,840 14.9 257
Census Tract 6.13 3,737 39.5 95
Census Tract 5.06 3,709 8.6 433
Census Tract 6.07 3,532 9.0 392
Census Tract 7.05 3,350 5.5 606
Census Tract 3.02 3,306 0.8 4,315
Census Tract 6.11 3,227 149.5 22
Census Tract 6.15 2,951 11.2 262
Census Tract 6.14 2,871 14.8 194
Census Tract 5.07 2,653 6.1 434
Census Tract 7.06 2,650 311.1 9
Census Tract 9428.03 2,574 8.9 290
Census Tract 9428.01 2,408 648.5 4
Census Tract 2.07 2,385 1.2 1,921
Census Tract 2.04 2,153 2.2 971
Census Tract 9433 2,078 309.1 7
Census Tract 6.12 2,061 2.8 727
Census Tract 9 1,990 5.7 349
Census Tract 5.04 1,964 58.8 33
Census Tract 9431 1,739 387.8 4
Census Tract 6.09 1,362 3.4 406
Census Tract 7.02 913 189.6 5

Related places

Metro areas containing San Juan County

About this page

This page shows demographics for a US county from the 2020 census and the American Community Survey: population, land area, density, urban share, and how the county compares to national averages for income, housing, age, and more.

Counties subdivide into census tracts, listed below with their populations. The drive-time and radius tables measure the population around the county's main population center.

Read how BlockAtlas computes population within an area →