API

292 measures for every US county and state, free, no key required. Disaster risk by type, school and college figures, weather, migration flows, demographics, utilities, hospital access, grocery access, religious adherence, sport.

Every field arrives with its source and its caveat attached. A number that travels without those is the thing this project exists against, and an API is the easiest way for a number to travel. Requests are rate-limited to 60 per IP per minute; exceeding the limit returns 429.

Endpoints

Options

• ?fields=snow,wildfire — return only the measures named.
• ?notes=false — bare values without the label, source and caveat, for when you already know what you are asking for.

What is here

What is not

12 measures are on the site but not in the API. The site may display what it is licensed to display; serving the same number through an API is a separate permission, and where a source does not grant it the field is withheld rather than quietly included.

• Typical home value — Zillow's terms restrict redistribution of their data.
• Home-value trend — Zillow's terms restrict redistribution of their data.
• Market asking rent — Zillow's terms restrict redistribution of their data.
• Home price-to-income — Derived from Zillow, so it carries the same restriction.
• Cost of living — C2ER licenses the cost of living index commercially; MERIC republishes it.
• Adjusted income — Derived from the C2ER index, so it carries the same restriction.
• Home insurance — Insurance.com's own compilation rather than a public record.
• Healthcare — KFF publishes under CC BY-NC-ND, which permits neither commercial use nor derivatives.
• Childcare — EPI and Child Care Aware's own compilation.
• Gas price — AAA's own price survey rather than a public record.
• Primary-care doctors — County Health Rankings licenses its data for non-profit use only.
• Air quality — County Health Rankings licenses its data for non-profit use only.

Home price, rent and cost of living are among them, which are probably the three most-wanted figures here. They are on the site and in the page-level downloads; they are not ours to redistribute.

Terms

Free, including commercial use. Credit MoverMath and link back. No warranty: these figures are republished from public sources and carry those sources' limits, which is why every field ships with its caveat.

No rate limit today. If one becomes necessary it will be generous and announced here rather than applied silently.

Example

curl https://movermath.com/api/v1/counties/53061?fields=snow,wildfire

{
  "county": { "fips": "53061", "name": "Snohomish County", "state": "WA" },
  "metrics": {
    "snow": {
      "value": 5.4,
      "label": "Snowfall",
      "unit": "in",
      "source": "NOAA NCEI nClimGrid-Daily",
      "caveat": "Annual total for the latest complete calendar year…"
    }
  }
}

Bulk data is also available as CSV from the coverage page, and any measure can be embedded as a map.