| ZIP Codes: | 15 ZIP Codes (10 Standard, 5 PO Box, 0 Unique) [See All] |
| Area Codes: | 505 / 575 |
| Timezone: | Mountain (GMT -07:00) |
| Local Time: | 2:13:12 PM |
| Population: | 25,819 [See All] |
| FIPS: | 35047 |
| CBSA: | Las Vegas, NM |
| Land Area: | 3,840 sq mi |
| Water Area: | 20 sq mi |
| Coordinates: | 35.5149, -105.2225 |
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25,819 residents live across 15 ZIPs covering 3,840 sq mi, served by 15 distinct USPS-recognized cities.
Population moved from 28,447 to 25,819 from 2014 to 2024 — a -9.2% change. 6 ZIPs gained residents, 8 lost.
The county's wealthiest ZIP 87562 (Rowe, $116,402 median) and poorest ZIP 87565 (San Jose, $24,190) are 8.3 miles apart — a 4.8× income gap across local geography.
Median home values vary 2.0× across this county — from $118,400 in 87745 (Sapello) to $234,300 in 87552 (Pecos).
Density varies 23× across the county — from 1 people/sq mi in 88416 (Conchas Dam) to 18 in 87538 (Ilfeld).
Educational attainment ranges from 3.8% bachelor's+ in 87562 (Rowe) to 45.2% in 87742 (Rociada) — the breadth of educational profiles across the area.
Within New Mexico, this is the #17 most populous of 34 counties and ranks #21 for median household income .
Weighted by population, the typical household earns about $50,477 across the county — reflecting what a typical resident sees, not a simple ZIP average.
26.5% of adults age 25+ hold a bachelor's degree or higher (5,073 of 19,153 reporting).
10 Standard delivery, 5 PO Box only, 0 single-entity Unique ZIPs serve this county.
Median household income spans 4.8× between the wealthiest and poorest ZIPs — a sign of significant intra-county inequality.
A frontier county — vast land area with only a few residents per square mile. Daily life looks very different here than in the country's denser counties.
One ZIP holds the majority of this county's population — a sign of a county built around a single city or town.
San Miguel County lost 9.2% of residents between 2014 and 2024. ZIPs that shed the largest share:
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 87701 | Las Vegas | Standard | 17,339 | $49,920 | 1,498.1 | -14.0% |
| 87552 | Pecos | Standard | 2,377 | $53,688 | 234.1 | -30.3% |
| 87560 | Ribera | Standard | 1,694 | $29,179 | 517.8 | 20.6% |
| 87745 | Sapello | Standard | 1,553 | $39,130 | 152.0 | 126.7% |
| 87562 | Rowe | PO Box | 569 | $116,402 | 50.9 | 25.9% |
| 87538 | Ilfeld | PO Box | 467 | — | 25.6 | -7.2% |
| 87569 | Serafina | PO Box | 389 | $99,779 | 66.8 | -9.7% |
| 87731 | Montezuma | Standard | 355 | — | 91.3 | -15.7% |
| 87742 | Rociada | Standard | 321 | $59,505 | 42.9 | -28.7% |
| 87583 | Villanueva | PO Box | 308 | — | 23.2 | 144.4% |
| 88416 | Conchas Dam | PO Box | 282 | — | 350.7 | 333.8% |
| 87565 | San Jose | Standard | 147 | $24,190 | 44.7 | -52.1% |
| 87573 | Tererro | Standard | 18 | — | 71.2 | — |
| 88421 | Garita | Standard | 0 | — | 390.7 | -100.0% |
| 88439 | Trementina | Standard | 0 | — | 279.9 | — |