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US Public Data APIs and Tools for Your Next Project

If you're building apps that need US demographic, economic, or education data, these free resources can save you hours of data wrangling.


SalaryByCity

US salary data for 800+ occupations across 400+ cities.

Check it out: salarybycity.com

ZipPeek

ZIP code demographics, income, and IRS migration flow data.

Check it out: zippeek.com

DegreeWize

College tuition, acceptance rates, and earnings-to-debt outcome data.

Check it out: degreewize.com

CostByCity

Cost of living comparison across US metro areas (BEA RPP).

Check it out: costbycity.com

GuideByCity

US city guides with affordability, growth, and hazard tiers.

Check it out: guidebycity.com


Related Free Tools

  • VocabLibre — French dictionary with 250,000+ word definitions
  • WellWaterPeek — Well water quality data and EPA MCL contaminant tiers by county
  • FarmlandWize — Farmland prices, cash rent yield, and acreage data by state
  • HomePricePeek — Compare home prices and rent across 500+ cities worldwide

More from the DataPeek Network

  • HikeWize — Hiking data with NOAA magnetic declination and daylight calculations
  • LawyerCostPeek — Attorney fees and BLS OES wage tiers by state and legal specialty
  • SafeCityPeek — Crime rates, mix signatures, and peer-cohort safety data for US cities
  • OSHAPeek — OSHA workplace safety inspections and DOL violation data (5.17M records)

All data tools are free and use public US government data. No signup required. Full directory: datapeekfacts.com.

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