Best ZIP Codes for Cash Flow in Boulder, CO (2026)

Ranked by cap rate — the annual return on the purchase price before financing. ZIPs that also clear the 1% rule are marked.

# ZIP City Home value Rent Cap rate 5-yr growth
1 80501 Longmont, CO $489,242 $1,826 2.91% 1.3%
2 80455 Jamestown, CO $541,789 $2,016 2.90% 0.6%
3 80510 Allenspark, CO $504,253 $1,809 2.80% 0.1%
4 80466 Nederland, CO $676,606 $2,375 2.74% 1.6%
5 80481 Ward, CO $527,181 $1,791 2.65% 1.4%
6 80026 Lafayette, CO $671,260 $2,220 2.58% 1.8%
7 80301 Boulder, CO $707,635 $2,314 2.55% 1.9%
8 80027 Louisville, CO $827,433 $2,491 2.35% 1.9%
9 80305 Boulder, CO $983,988 $2,955 2.34% 1.9%
10 80303 Boulder, CO $820,623 $2,277 2.16% 0.9%
11 80503 Longmont, CO $739,082 $1,932 2.04% 2.3%
12 80302 Boulder, CO $1,109,412 $2,319 1.63% 1.0%
13 80304 Boulder, CO $1,229,013 $2,470 1.57% 1.8%
14 80540 Lyons, CO $754,390 $1,425 1.47% 1.9%

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 →

Same metro, different strategy

Appreciation in Boulder, CO

Or see the full Boulder, CO metro profile.