St. Clair
Source:
Michigan
St. Clair is a mid-size county in Michigan with 21 ZIP codes, 164,662 people, and upper-quartile household income among US counties. All data is sourced from the U.S. Census Bureau American Community Survey (ACS) 2023 5-Year Estimates.
National county placement
According to ACS 5-Year Estimates, St. Clair, MI sits among US counties with an upper-quartile household income, on a mid-size county population base, across a multi-ZIP patchwork.
- Top 22%
- household income vs 3,210 US counties
- 164,662
- combined ZIP population
- 21
- USPS ZIP codes covered
- $80,345
- avg ZIP median income
Income percentile ranks this county's average ZIP median household income against 3,210 US counties with ACS income on at least one ZIP.
St. Clair lands in the national county income distribution as upper-quartile household income on mid-size county footing (FIPS 26147, 21 ZIPs, combined population 164,662). Sort the ZIP table by population before treating the county mean as uniform.
High-income counties with wide ZIP mosaics hide sharp internal gradients. The densest ZIP here is 48060 (Port Huron) with 40,831 residents - open it beside a thin rural code from the table before treating the county mean as uniform. HUD Fair Market Rents and FBI county tables attach to FIPS 26147, so scorecards stay county-keyed while household income stays ZIP-keyed.
Save two ZIPs from the table into your shortlist, then open a compare link - that is the return path a static county summary cannot replace. All figures here come from Census ACS 2023 5-Year Estimates and USPS ZCTA files.
21
Total ZIPs
164,662
Total Population
ZIP Codes in St. Clair
Side-by-side: Compare 48060 vs 48059 →
| ZIP Code | City | Population | Density |
|---|---|---|---|
| 48060 | Port Huron | 40,831 | 756 |
| 48059 | Fort Gratiot | 15,123 | 185 |
| 48079 | Saint Clair | 12,304 | 114 |
| 48001 | Algonac | 11,986 | 243 |
| 48040 | Marysville | 9,956 | 556 |
| 48074 | Smiths Creek | 9,356 | 97 |
| 48039 | Marine City | 7,807 | 131 |
| 48054 | East China | 7,339 | 70 |
| 48049 | North Street | 5,582 | 60 |
| 48097 | Yale | 5,499 | 28 |
| 48023 | Fair Haven | 5,178 | 117 |
| 48041 | Memphis | 4,561 | 44 |
| 48014 | Capac | 4,256 | 45 |
| 48064 | Casco | 4,107 | 43 |
| 48063 | Columbus | 4,070 | 43 |
| 48006 | Avoca | 4,007 | 22 |
| 48002 | Allenton | 3,285 | 34 |
| 48027 | Goodells | 3,249 | 34 |
| 48022 | Emmett | 2,654 | 29 |
| 48032 | Jeddo | 2,322 | 24 |
| 48028 | Harsens Island | 1,190 | 26 |
Frequently Asked Questions
What is the population of St. Clair?
St. Clair has a total population of 164,662 across 21 ZIP codes, based on U.S. Census Bureau ACS 2023 data.
What ZIP codes are in St. Clair?
St. Clair includes 21 ZIP codes: 48060, 48059, 48079, 48001, 48040, 48074, 48039, 48054, 48049, 48097, and more.