Zip Code 25187 — Southside, WV
25187 is a ZIP Code associated with Southside, WV, located within Mason. 25187 ranks #10 out of 13 ZIP codes in Mason County by population (and #453 out of 738 in WV). The area supports an estimated population of 497 residents across Data Pending housing units, with a population density of 4.8 people per square mile.
WorldPlaceData database updated: October 2026
📍 View location on OpenStreetMap (38.726170, -82.018780)
| Data Metric | Local Statistic |
|---|
| Postal / Zip Code | 25187 |
| Primary City | Southside |
| State / Province | WV |
| County | Mason |
| Total Population | 497 |
| Median Household Income | Data Pending |
| Total Housing Units | Data Pending |
| Population Density | 4.8 people/sq mi |
| Timezone | America/New_York |
How 25187 Compares
| Metric | ZIP 25187 | Mason County | WV State Average |
|---|
| Population | 497 | 22,930 (Total) | 1,778,104 (Total) |
| Average ZIP Income | Data Pending | N/A | N/A |
| Population Density | 4.8 /sq mi | -- | -- |
| County Pop Rank | #10 of 13 | -- | -- |
Nearby ZIP Codes
Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →