Fastest-Appreciating ZIP Codes in Watertown-Fort Atkinson, WI (2026)

Ranked by 5-year compound annual growth in home values. Fast growth and strong cash flow rarely appear in the same ZIP — this is the other side of that trade.

# ZIP City Home value Rent Cap rate 5-yr growth
1 53137 Helenville, WI $465,672 $1,080 1.81% 7.2%
2 53594 Waterloo, WI $363,958 $1,197 2.57% 6.9%
3 53038 Johnson Creek, WI $420,852 $1,206 2.24% 6.6%
4 53178 Sullivan, WI $439,229 $1,116 1.98% 6.6%
5 53094 Watertown, WI $326,433 $1,128 2.69% 6.6%
6 53549 Jefferson, WI $350,316 $965 2.15% 6.4%
7 53156 Palmyra, WI $379,243 $963 1.98% 6.1%
8 53538 Fort Atkinson, WI $332,383 $1,358 3.19% 6.0%
9 53551 Lake Mills, WI $430,570 $1,098 1.99% 5.6%

Ranked from Repit’s own ZIP-level data — Zillow home values and rents, HUD fair-market rents where Zillow has no coverage, and U.S. Census vacancy. Cap rate is gross: annual rent over purchase price, before financing and expenses. Every ZIP above links to its full free page. How we calculate this →