ZIP Code 48421 - Columbiaville Michigan
Overview
ZIP Code 48421 is located in Columbiaville Michigan. Portions of 48421 are also in Barnes Lake and Millers Lake and Marathon Township and Deerfield Township (Lapeer County) and Oregon Township and Richfield Township (Genesee County). 48421 is primarily within Lapeer County, with some portions in Genesee County. Regionally, 48421 is located in Metro Detroit.
ZIP Code 48421 Quick Stats
| ZIP Code Name | Columbiaville |
| Primary County | Lapeer County |
| ZIP Code Type | Standard |
| Population (2022) | 6,592 |
| Area Code(s) | 810 |
| Current Time | EDT |
ZIP Code 48421 Map
48421 Demographics
48421 can be classified socioeconomically as Lower Middle Class class compared to other ZIP Codes in Michigan based on Median Household Income and Average Adjusted Gross Income. The majority race/ethnicity residing in 48421 is White. The majority race/ethnicity attending public schools in 48421 is White. The current unemployment level in 48421 is 5.1%.
| Population | 6,592 |
| Population Growth Rate | 0% |
| Population Density | 154 People per Square Mile |
| Total Households | 2,363 |
| Percentage High Income Households | 2.5% |
| Median Household Income (2021) | $61,184 |
| Average Adjusted Gross Income (2021) | $459,900 |
| Current Unemployment Rate (May 2026) | 5.1% |
| Sales Tax Rate (2025) | 6% |
| Majority Race/Ethnicity | White - 98.52% |
| Public School Majority Race/Ethnicity | White - 92.01% |
48421 Race/Ethnicity Breakdown
| Race/Ethnicity | Total | Percentage |
|---|---|---|
| White | 6,211 | 98.52% |
| Black | 1 | 0.02% |
| Hispanic | 52 | 0.82% |
| Asian | 1 | 0.02% |
| Native American | 39 | 0.62% |
| Hawaiian/Pac. Islander | 0 | 0% |
48421 Public School Race/Ethnicity Breakdown
| Race/Ethnicity | Total | Percentage |
|---|---|---|
| White | 334 | 95.7% |
| Black | 2 | 0.57% |
| Hispanic | 12 | 3.44% |
| Asian | 0 | 0% |
| Native American | 1 | 0.29% |
| Hawaiian/Pac. Islander | 0 | 0% |
48421 Educational Attainment Levels
| Highest Education Level | Total | Percentage |
|---|---|---|
| Less Than 1 Year of College | 340 | 8.64% |
| Bachelor Degree | 573 | 14.57% |
| High School Diploma | 1,357 | 34.5% |
| No High School Diploma | 79 | 2.01% |
| GED or Alternate | 154 | 3.92% |
| 1 or More Years of College | 829 | 21.08% |
| Associates Degree | 389 | 9.89% |
| Masters Degree | 175 | 4.45% |
| Professional Degree | 12 | 0.31% |
| Doctorate Degree | 25 | 0.64% |
48421 Geography
| Coordinates | 43.15520096, -83.39400482 |
| Adjacent ZIP Codes | |
| Cities/Towns in 48421 | |
| Regions | Metro Detroit Flint-Saginaw-Bay City Area |
| Metropolitan/Micropolitan Stat Areas | Detroit-Warren-Dearborn, MI Flint, MI |
| Time Zone | Eastern Daylight Time |
| IANA Timezone | America/Detroit |
| Area | 43 Square Miles |
48421 Schools
| School Districts in 48421 | |
| Elementary Schools in 48421 | |
| Middle Schools in 48421 | |
| High Schools in 48421 |
48421 Weather and Climate Data
| Plant Hardiness Zone | Zone 5b: -15F to -10F | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Average First Frost Date | September 21 - 31 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Average Last Frost Date | May 11 - 20 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Koppen-Geiger Climate Zone | Dfb - Humid Continental Mild Summer, Wet All Year | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Ecoregion | 56h - Interlobate Dead Ice Moraines | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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