| ZIP Codes: | 7 ZIP Codes (6 Standard, 1 PO Box, 0 Unique) [See All] |
| Area Codes: | 534 / 715 |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 2:14:18 PM |
| Population: | 106,310 [See All] |
| FIPS: | 55035 |
| CBSA: | Eau Claire, WI |
| Land Area: | 526 sq mi |
| Water Area: | 8 sq mi |
| Coordinates: | 44.7580, -91.3275 |
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106,310 residents live across 7 ZIPs covering 526 sq mi, served by 5 distinct USPS-recognized cities.
Population moved from 99,847 to 106,310 from 2014 to 2024 — a +6.5% change. 5 ZIPs gained residents, 1 lost.
The county's wealthiest ZIP 54742 (Fall Creek, $102,083 median) and poorest ZIP 54741 (Fairchild, $62,679) are 19.0 miles apart — a 1.6× income gap across local geography.
Median home values vary 1.7× across this county — from $166,700 in 54741 (Fairchild) to $289,900 in 54701 (Eau Claire).
Density varies 98× across the county — from 16 people/sq mi in 54741 (Fairchild) to 1,538 in 54720 (Altoona).
Educational attainment ranges from 14.9% bachelor's+ in 54722 (Augusta) to 44.0% in 54701 (Eau Claire) — the breadth of educational profiles across the area.
Within Wisconsin, this is the #15 most populous of 73 counties and ranks #27 for median household income with the #13 fastest decade growth .
Weighted by population, the typical household earns about $74,957 across the county — reflecting what a typical resident sees, not a simple ZIP average.
37.0% of adults age 25+ hold a bachelor's degree or higher (25,327 of 68,464 reporting).
6 Standard delivery, 1 PO Box only, 0 single-entity Unique ZIPs serve this county.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 54703 | Eau Claire | Standard | 44,153 | $71,518 | 84.1 | 5.8% |
| 54701 | Eau Claire | Standard | 43,014 | $74,361 | 86.7 | 4.5% |
| 54720 | Altoona | Standard | 8,947 | $85,977 | 5.8 | 26.4% |
| 54722 | Augusta | Standard | 4,277 | $71,181 | 138.2 | 1.2% |
| 54742 | Fall Creek | Standard | 4,255 | $102,083 | 105.2 | 6.4% |
| 54741 | Fairchild | Standard | 1,664 | $62,679 | 106.2 | -0.1% |
| 54702 | Eau Claire | PO Box | — | — | 0.0 | — |