Eau Claire County, WI: Cities, ZIP Codes & Population
Eau Claire County is a county-level area in Wisconsin identified by the FIPS code 55035. Our data lists 5 places in it, led by Eau Claire, WI, with combined estimates of about 118,691 people across those places. This page shows its cities, ZIP codes, time zone and neighboring counties.
What are the key facts about Eau Claire County?
| County | Eau Claire County |
|---|---|
| State | Wisconsin |
| FIPS code | 55035 |
| Places in our data | 5 |
| Places with a city page | 2 |
| Combined place estimates | 118,691 |
| Largest place | Eau Claire, WI (107,404) |
| Rank in state | 13th of 72 counties by combined place population |
| Weighted density | 2,031 per sq mi |
| Time zone | Central time |
| ZIP codes | 7 |
Which cities and towns are in Eau Claire County?
Eau Claire County has 2 places large enough for a full page on this site. They are ranked below by estimated population, together with whether each is incorporated, its density in people per square mile and the number of ZIP codes it uses. Eau Claire, WI is the largest, followed by Altoona, WI.
| Place | Type | Population | Per sq mi | ZIPs |
|---|---|---|---|---|
| Eau Claire, WI | Incorporated | 107,404 | 2,103 | 3 |
| Altoona, WI | Incorporated | 7,870 | 1,660 | 1 |
The county also contains 3 smaller communities that appear here but do not have separate pages because their populations are too small for reliable data: Augusta, Fall Creek, Fairchild. Residents of these places often depend on the county for services such as roads, courts and public health.
How large is Eau Claire County compared with other counties in Wisconsin?
Adding up the estimates for the places in our data gives 118,691 people, which ranks Eau Claire County 13th among 72 counties in Wisconsin. The average listed place has about 23,738 residents. The weighted density is about 2,031 people per square mile, which is suburban by our scale. These totals add up place estimates, so they can differ from the official county population, which includes people outside any listed place. See why population figures differ.
What ZIP codes are in Eau Claire County?
The places in Eau Claire County use 7 ZIP codes: 54701, 54702, 54703, 54720, 54722, 54741, 54742. Every code begins with 5, which is assigned to the Upper Midwest and northern Plains (Iowa, Minnesota, Montana, the Dakotas and Wisconsin). A ZIP code can cross county lines, so a code listed here may also serve addresses in a neighboring county. Use the ZIP code lookup to check a single code, or read how ZIP codes work.
Which counties are near Eau Claire County?
The closest counties by distance between the average locations of their places are listed below. The distance is a rough guide to how close the areas are, because county shapes vary widely.
- Chippewa County, WI — about 21 miles north (center to center), 35,549 people in listed places
- Trempealeau County, WI — about 29 miles south (center to center), 15,058 people in listed places
- Jackson County, WI — about 33 miles southeast (center to center), 8,130 people in listed places
- Dunn County, WI — about 36 miles northwest (center to center), 25,292 people in listed places
- Clark County, WI — about 37 miles east (center to center), 15,664 people in listed places
- Buffalo County, WI — about 38 miles southwest (center to center), 6,072 people in listed places
What does the FIPS code 55035 mean?
The first two digits, 55, identify Wisconsin, and the last three, 035, identify Eau Claire County inside that state. Government datasets use this code to join records without confusing counties that share a name. Our guide to counties and FIPS codes explains the numbering, and the Wisconsin hub lists every county we cover in the state.
Where to go next
Combined place populations are estimates from a compiled dataset and are not official county totals.