| ZIP Codes: | 20 ZIP Codes (15 Standard, 5 PO Box, 0 Unique) [See All] |
| Area Codes: | 304 / 681 |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 2:14:23 PM |
| Population: | 58,737 [See All] |
| FIPS: | 54055 |
| CBSA: | Bluefield, WV-VA |
| Land Area: | 432 sq mi |
| Water Area: | 2 sq mi |
| Coordinates: | 37.4080, -81.1729 |
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58,737 residents live across 20 ZIPs covering 432 sq mi, served by 18 distinct USPS-recognized cities.
Population moved from 62,164 to 44,756 from 2014 to 2024 — a -28.0% change. 6 ZIPs gained residents, 11 lost.
The county's wealthiest ZIP 25820 (Camp Creek, $135,568 median) and poorest ZIP 24737 (Montcalm, $31,330) are 12.0 miles apart — a 4.3× income gap across local geography.
Median home values vary 7.7× across this county — from $41,500 in 24736 (Matoaka) to $320,500 in 25820 (Camp Creek).
Density varies 1863× across the county — from 15 people/sq mi in 24736 (Matoaka) to 27,775 in 24737 (Montcalm).
Educational attainment ranges from 4.2% bachelor's+ in 24736 (Matoaka) to 39.1% in 25820 (Camp Creek) — the breadth of educational profiles across the area.
Within West Virginia, this is the #10 most populous of 55 counties and ranks #33 for median household income .
Weighted by population, the typical household earns about $54,035 across the county — reflecting what a typical resident sees, not a simple ZIP average.
22.7% of adults age 25+ hold a bachelor's degree or higher (9,471 of 41,665 reporting).
15 Standard delivery, 5 PO Box only, 0 single-entity Unique ZIPs serve this county.
Median household income spans 4.3× between the wealthiest and poorest ZIPs — a sign of significant intra-county inequality.
Mercer County lost 5.5% of residents between 2014 and 2024. ZIPs that shed the largest share:
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 24701 | Bluefield | Standard | 17,117 | $50,455 | 66.5 | -17.6% |
| 24740 | Princeton | Standard | 16,498 | $44,793 | 31.7 | -47.0% |
| 24739 | Princeton | Standard | 13,981 | $61,436 | 130.0 | — |
| 24747 | Rock | Standard | 3,125 | $48,203 | 49.7 | 4.9% |
| 24712 | Athens | Standard | 2,913 | $80,625 | 9.6 | 59.9% |
| 25971 | Lerona | Standard | 1,438 | $74,439 | 19.3 | 19.7% |
| 24737 | Montcalm | PO Box | 1,186 | $31,330 | 0.0 | 2272.0% |
| 25820 | Camp Creek | Standard | 583 | $135,568 | 31.1 | 1.0% |
| 25841 | Flat Top | Standard | 526 | — | 32.0 | -27.2% |
| 24736 | Matoaka | Standard | 426 | — | 28.6 | -42.0% |
| 24715 | Bramwell | Standard | 275 | $76,875 | 8.4 | -36.5% |
| 24714 | Beeson | Standard | 203 | — | 11.0 | 67.8% |
| 24731 | Kegley | Standard | 175 | — | 0.8 | -36.4% |
| 24733 | Lashmeet | Standard | 122 | — | 7.1 | -81.5% |
| 24724 | Bramwell | Standard | 68 | — | 0.9 | -38.2% |
| 25922 | Spanishburg | Standard | 63 | $2,499 | 5.5 | -72.7% |
| 24729 | Hiawatha | PO Box | 38 | $2,499 | 0.0 | -72.9% |
| 24738 | Nemours | PO Box | 0 | — | 0.2 | -100.0% |
| 24751 | Wolfe | PO Box | — | — | 0.0 | — |
| 24732 | Kellysville | PO Box | — | — | 0.0 | — |