| ZIP Codes: | 8 ZIP Codes (8 Standard, 0 PO Box, 0 Unique) [See All] |
| Area Codes: | 353 / 608 |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 11:55:38 PM |
| Population: | 36,503 [See All] |
| FIPS: | 55045 |
| CBSA: | Madison, WI |
| Land Area: | 588 sq mi |
| Water Area: | 1 sq mi |
| Coordinates: | 42.6851, -89.5541 |
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36,503 residents live across 8 ZIPs covering 588 sq mi, served by 8 distinct USPS-recognized cities.
Population moved from 36,896 to 36,503 from 2014 to 2024 — a -1.1% change. 4 ZIPs gained residents, 4 lost.
The county's wealthiest ZIP 53521 (Brooklyn, $108,036 median) and poorest ZIP 53550 (Juda, $73,438) are 20.0 miles apart — a 1.5× income gap across local geography.
Median home values vary 1.9× across this county — from $205,300 in 53522 (Browntown) to $391,100 in 53521 (Brooklyn).
Density varies 4× across the county — from 24 people/sq mi in 53522 (Browntown) to 107 in 53574 (New Glarus).
Educational attainment ranges from 9.3% bachelor's+ in 53550 (Juda) to 41.3% in 53574 (New Glarus) — the breadth of educational profiles across the area.
Within Wisconsin, this is the #38 most populous of 73 counties and ranks #13 for median household income .
Weighted by population, the typical household earns about $83,251 across the county — reflecting what a typical resident sees, not a simple ZIP average.
26.8% of adults age 25+ hold a bachelor's degree or higher (7,075 of 26,368 reporting).
8 Standard delivery, 0 PO Box only, 0 single-entity Unique ZIPs serve this county.
A frontier county — vast land area with only a few residents per square mile. Daily life looks very different here than in the country's denser counties.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 53566 | Monroe | Standard | 14,901 | $74,058 | 161.3 | -1.0% |
| 53520 | Brodhead | Standard | 6,687 | $75,205 | 121.7 | -1.3% |
| 53574 | New Glarus | Standard | 4,033 | $106,508 | 37.9 | 0.8% |
| 53521 | Brooklyn | Standard | 3,640 | $108,036 | 59.3 | -0.1% |
| 53570 | Monticello | Standard | 2,686 | $87,500 | 77.1 | 0.4% |
| 53502 | Albany | Standard | 2,393 | $87,000 | 47.3 | 2.8% |
| 53550 | Juda | Standard | 1,220 | $73,438 | 44.2 | 1.2% |
| 53522 | Browntown | Standard | 943 | $81,528 | 39.7 | -22.1% |