Zip Code 43543 — Montpelier, OH
43543 is a ZIP Code associated with Montpelier, OH, located within Williams. 43543 ranks #2 out of 10 ZIP codes in Williams County by population (and #442 out of 1,232 in OH). The area supports an estimated population of 7,401 residents across Data Pending housing units, with a population density of 33.7 people per square mile.
WorldPlaceData database updated: October 2026
📍 View location on OpenStreetMap (41.605750, -84.633800)
| Data Metric | Local Statistic |
|---|
| Postal / Zip Code | 43543 |
| Primary City | Montpelier |
| State / Province | OH |
| County | Williams |
| Total Population | 7,401 |
| Median Household Income | Data Pending |
| Total Housing Units | Data Pending |
| Population Density | 33.7 people/sq mi |
| Timezone | America/New_York |
How 43543 Compares
| Metric | ZIP 43543 | Williams County | OH State Average |
|---|
| Population | 7,401 | 37,660 (Total) | 11,810,293 (Total) |
| Average ZIP Income | Data Pending | N/A | N/A |
| Population Density | 33.7 /sq mi | -- | -- |
| County Pop Rank | #2 of 10 | -- | -- |
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 →