Note: As defined by the US Census Bureau, a city's official boundaries often extend miles beyond the city itself and may even cross county lines. As such, several thousand US cities officially exist in two or more counties (and therefore appear on multiple counties' lists of cities.)
City | Rank | 2024 Pop. | 2020 Pop. | Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Socorro | 1 | 8,255 | 8,679 | -1.27% | 571 | 14.5 | City |
| Rio Communities | 2 | 4,898 | 4,932 | -0.18% | 637 | 7.7 | City |
| Los Chaves | 3 | 4,739 | 4,965 | -1.06% | 414 | 11.4 | CDP |
| Magdalena | 4 | 770 | 806 | -1.16% | 124 | 6.2 | Village |
| Polvadera | 5 | 624 | 626 | 4.35% | 644 | 1.0 | CDP |
| Lemitar | 6 | 567 | 475 | 3.09% | 414 | 1.4 | CDP |
| Sausal | 7 | 404 | 801 | -10.22% | 180 | 2.2 | CDP |
| Pueblitos | 8 | 360 | 205 | -7.93% | 169 | 2.1 | CDP |
| Casa Colorada | 9 | 257 | 125 | -0.39% | 47 | 5.5 | CDP |
| Abeytas | 10 | 186 | 245 | 8.14% | 151 | 1.2 | CDP |
| Alamillo | 11 | 185 | 201 | 3.35% | 154 | 1.2 | CDP |
| La Joya | 12 | 167 | 35 | 7.74% | 178 | 0.9 | CDP |
| Madrone | 13 | 85 | 579 | -34.62% | 28 | 3.1 | CDP |
| Las Nutrias | 14 | 80 | 104 | -5.88% | 83 | 1.0 | CDP |
| Punta Agua | 15 | 54 | 12 | 8% | 39 | 1.4 | CDP |
| San Antonio | 16 | 54 | 9 | -12.9% | 119 | 0.5 | CDP |
| Chamizal | 17 | 42 | 62 | -8.7% | 95 | 0.4 | CDP |
| San Acacia | 18 | 41 | 18 | 7.9% | 59 | 0.7 | CDP |
| Luis Lopez | 19 | 38 | 74 | -11.63% | 71 | 0.5 | CDP |
| Deer Canyon | 20 | 28 | 30 | 7.69% | 4 | 8.0 | CDP |
| Escondida | 21 | 20 | 14 | 11.11% | 149 | 0.1 | CDP |
Note: City markers shown outside the county boundary mean that a part of the city extends into this county, but is primarily located in an adjacent county.
Socorro is the largest city in Socorro County.
Escondida is the smallest city in Socorro County.
There are 21 cities in Socorro County, New Mexico.