Zip Code 48421 — Columbiaville, MI
48421 is a ZIP Code associated with Columbiaville, MI, located within Lapeer. 48421 ranks #5 out of 13 ZIP codes in Lapeer County by population (and #408 out of 992 in MI). The area supports an estimated population of 6,935 residents across Data Pending housing units, with a population density of 64.6 people per square mile.
WorldPlaceData database updated: October 2026
📍 View location on OpenStreetMap (43.153210, -83.392620)
| Data Metric | Local Statistic |
|---|
| Postal / Zip Code | 48421 |
| Primary City | Columbiaville |
| State / Province | MI |
| County | Lapeer |
| Total Population | 6,935 |
| Median Household Income | Data Pending |
| Total Housing Units | Data Pending |
| Population Density | 64.6 people/sq mi |
| Timezone | America/Detroit |
How 48421 Compares
| Metric | ZIP 48421 | Lapeer County | MI State Average |
|---|
| Population | 6,935 | 87,562 (Total) | 10,077,716 (Total) |
| Average ZIP Income | Data Pending | N/A | N/A |
| Population Density | 64.6 /sq mi | -- | -- |
| County Pop Rank | #5 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 →