Drop a ZIP or a county FIPS. See net domestic migration from Census, tax-return inflow from IRS SOI, and ACS mobility. County aggregates only. Never a person.
This domain owns the ZIP hinge. Neighbors that still show a ZIP migration telescope are a template leak. Here the ZIP (or FIPS, or county name) returns a real county cut.
Census PEP, IRS SOI, and ACS do not count the same people. PEP is 2023 residence change; SOI is 2022-23 tax returns that changed county; ACS is a 5-year sample. All three are county totals.
Your Markets, Monthly
The desk is one county. The Watch re-cuts the states you are choosing between each month, and the decade line that says whether affordability has turned. Helix checkout, population rungs only.
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Run the numbers - free
From CalcStack, the sister toolkit: a free calculator that runs entirely in your browser. No signup, nothing uploaded. Doubling time is the population question — how long until a city, a county, or a market doubles at its current growth rate.