One transparent 0–100 composite, ranked across every scored U.S. ZIP code. It blends gross yield, debt coverage, climate-risk drag and tenant-demand durability — with every weight on the table. This is a screen, not a recommendation.
Every number on this page is generated by
scripts/best_cashflow.py from zip_master.json
— Census ACS, Zillow ZHVI/ZORI, HUD FMR, FEMA National Risk Index,
NAIC insurance and IRS migration. Nothing is hand-entered. The methodology
is fully exposed below: you are meant to be able to disagree with our
weights.
Five components. Each is percentile-ranked (0–100) across all scored ZIPs, then weighted. The FEMA term is subtracted. After the weighted sum, a population gate and a data-quality multiplier are applied. Nothing here is a black box.
walk_score where present (it covers only ~22% of ZIPs)
and falls back to a housing-density proxy where it is absent —
we do not fabricate a walkability value. Because even the real signal
is coarse, this component carries only a 0.10 weight.ZIPs with fewer than 1,000 residents or 50 housing units are excluded outright. A great DSCR in a near-empty ZCTA is statistical noise, not a real, tradeable opportunity. This gate removed — ZIPs.
The score is discounted
for ZIPs priced on coarse fallback data, so an estimate-tier ZIP
cannot outrank a real-data ZIP on a noisy estimate:
rent — Zillow ZORI 1.00 · ACS survey
0.92 · HUD Small-Area FMR 0.85
· HUD county FMR 0.80
value — Zillow ZHVI 1.00 · ACS survey
0.93
Sortable — click any column header. A high score means the data says look here; it does not mean buy. The est tag flags ZIPs priced on policy or survey rent rather than transacted Zillow data.
The single biggest re-ordering effect. These ZIPs rank near the very top on raw gross yield — and the FEMA penalty plus data-quality discount knocked them thousands of places down the composite. High yield can simply be the market pricing in uninsured hazard.
| ZIP | County | Yield | FEMA risk | Rating | Yield rank | Composite rank | Drop |
|---|
The headline rank rewards raw cash flow. But the best ZIP for you depends on the constraint you care about. Each card is the top-scoring cash-flow ZIP that also satisfies one filter.
For completeness — the bottom of the same ranking. These are overwhelmingly expensive coastal-metro ZIPs where rent is a tiny fraction of an enormous home value. Low score is not "bad place"; it is "bad cash flow at today's prices."
| Rank | ZIP | County | State | Score | Yield | DSCR |
|---|