Blank map of New Mexico by county
All 33 counties of New Mexico, ready to print on Letter, Tabloid, A4 or A3, or to download as PNG and SVG. Free, no sign-up.
Preview · A4 portrait · Numbered
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Mapsfera · data US Census Bureau
New Mexico on the map
New Mexico has 33 counties; only 15 states have fewer. The largest is Catron, with 6,924 sq mi of land, and the smallest is Los Alamos, with 109 sq mi: Catron is about 63 times bigger.
The state capital, Santa Fe, is in Santa Fe County. The capital version marks it on the map.
Bernalillo County is the most populous, with 667,601 people in 2025, or 31% of the state. The least populous is Harding, with 617. Since 2020, Valencia has grown the fastest (+7.4%) and McKinley has lost the most (−6.5%).
What each county borders
Lincoln borders the most counties in the state: 7 (Chaves, De Baca, Guadalupe, Otero, Sierra, Socorro, and Torrance).
17 counties touch another state. 8 border Texas: Curry, Doña Ana, Eddy, Lea, Otero, Quay, Roosevelt, and Union. 6 border Arizona: Catron, Cibola, Grant, Hidalgo, McKinley, and San Juan. 5 border Colorado: Colfax, Rio Arriba, San Juan, Taos, and Union. Only Union borders Oklahoma.
3 counties border Mexico: Doña Ana, Hidalgo, and Luna.
None has a coastline: New Mexico is landlocked.
Number key
Numbers follow alphabetical order, from 1 (Bernalillo) to 33 (Valencia). Los Alamos is too small for a number on Letter or A4 but keeps its number in the table; Tabloid and A3 fit more. Area is land area, without lakes or sea, and population is the Census estimate for July 1, 2025; “Borders” counts neighboring counties in the same state.
| No. | County | Land area | Population (2025) | Borders |
|---|---|---|---|---|
| 1 | Bernalillo | 1,161 sq mi | 667,601 | 5 |
| 2 | Catron | 6,924 sq mi | 3,827 | 4 |
| 3 | Chaves | 6,067 sq mi | 63,364 | 6 |
| 4 | Cibola | 4,540 sq mi | 26,807 | 6 |
| 5 | Colfax | 3,758 sq mi | 12,184 | 4 |
| 6 | Curry | 1,406 sq mi | 46,655 | 2 |
| 7 | De Baca | 2,323 sq mi | 1,647 | 5 |
| 8 | Doña Ana | 3,808 sq mi | 229,091 | 3 |
| 9 | Eddy | 4,176 sq mi | 62,509 | 3 |
| 10 | Grant | 3,961 sq mi | 27,252 | 4 |
| 11 | Guadalupe | 3,030 sq mi | 4,343 | 5 |
| 12 | Harding | 2,125 sq mi | 617 | 5 |
| 13 | Hidalgo | 3,439 sq mi | 3,929 | 2 |
| 14 | Lea | 4,392 sq mi | 74,749 | 3 |
| 15 | Lincoln | 4,831 sq mi | 19,844 | 7 |
| 16 | Los Alamos | 109 sq mi | 19,407 | 3 |
| 17 | Luna | 2,965 sq mi | 25,407 | 4 |
| 18 | McKinley | 5,451 sq mi | 68,119 | 3 |
| 19 | Mora | 1,926 sq mi | 4,051 | 6 |
| 20 | Otero | 6,613 sq mi | 70,368 | 5 |
| 21 | Quay | 2,874 sq mi | 8,454 | 7 |
| 22 | Rio Arriba | 5,861 sq mi | 39,832 | 6 |
| 23 | Roosevelt | 2,446 sq mi | 18,615 | 5 |
| 24 | San Juan | 5,517 sq mi | 120,340 | 3 |
| 25 | San Miguel | 4,722 sq mi | 26,260 | 6 |
| 26 | Sandoval | 3,710 sq mi | 159,565 | 7 |
| 27 | Santa Fe | 1,910 sq mi | 156,907 | 7 |
| 28 | Sierra | 4,181 sq mi | 11,395 | 7 |
| 29 | Socorro | 6,646 sq mi | 15,838 | 6 |
| 30 | Taos | 2,202 sq mi | 34,564 | 3 |
| 31 | Torrance | 3,345 sq mi | 16,100 | 7 |
| 32 | Union | 3,825 sq mi | 3,844 | 3 |
| 33 | Valencia | 1,067 sq mi | 82,013 | 4 |
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Frequently asked questions
How many counties does New Mexico have?
33 counties. Only 15 states have fewer.
What is the largest county in New Mexico?
Catron, with 6,924 sq mi of land. The smallest is Los Alamos, with 109 sq mi.
What is the most populous county in New Mexico?
Bernalillo County, with an estimated 667,601 people in 2025, or 31% of the state.
What county is Santa Fe in?
The state capital, Santa Fe, is in Santa Fe County.
Which New Mexico counties border Mexico?
3 counties: Doña Ana, Hidalgo, and Luna.
Can I use it in class?
Yes, it’s free. Print it, copy it and hand it out as many times as you like. If you post it on a blog or a class website, credit “Mapsfera · data US Census Bureau”.
How do I print it on US Letter paper?
Choose Letter in “Paper size” and click “Download PDF”. In the print window, pick Letter paper and 100% scale (“Actual size”). For a bigger map, choose Tabloid (11 × 17 in) or A3.
What order are the numbers in?
Alphabetical, from 1 to the last one. That makes the key easy to follow when you grade, and it’s the same key the worksheet’s answer page uses.
Sources
- Boundaries: U.S. Census Bureau, Cartographic Boundary Files 2025, counties at 1:500,000 (public domain)
- Land and water area: U.S. Census Bureau (TIGER/Line and 2025 Gazetteer); population: Vintage 2025 estimates (July 1, 2025)
- State capital: Natural Earth, Populated Places (public domain); which counties it spans, Census places
- Neighbors, coastline and borders: calculated from those boundaries (and checked against the Census county adjacency file)