199d8b37d3
Pull Atlas's place→county crosswalk (Census TIGER 2024 places × county geometries, 32,041 places) into the build as a committed raw input, and use it to resolve municipal officeholders whose county was unknown. - data/place_county_crosswalk.jsonl — new raw input (place_geoid → county_geoid) - build.py — place-name+state → county_geoid → ACS county slug as a fallback in county_slug(); city_slug() generalized to non-FL bare place labels - data/sources/sources.yaml — provenance entry for the crosswalk _unresolved municipals: 1919 → 58. The remainder are genuine: CT planning regions (post-county), county-level rows mislabeled municipal upstream, consolidated city-counties (null label), Wikidata-QID placeholder names, and ambiguous same-name places — left unresolved rather than guessed. Join key is county_geoid (5-digit FIPS); the directory slug is taken from the ACS county node so municipals nest under the exact existing county dir. Deterministic (byte-identical rebuild); validate.py passes 19,721 records. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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type, title, classification, fips, state, demographics, sources, confidence, tags, timestamp
| type | title | classification | fips | state | demographics | sources | confidence | tags | timestamp | ||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jurisdiction | Middlesex County, MA | county | 25017 | MA |
|
|
official |
|
2026-07-03 |
Middlesex County, MA
County jurisdiction — 7 officeholders mapped.
Demographics (ACS 2023)
| Measure | Value |
|---|---|
| Population | 1638365 |
| Under 18 | 318865 |
| 18–64 | 1052493 |
| 65+ | 267007 |
| Median household income | 130847 |
| Poverty rate | 7.74 |
| Homeownership rate | 61.32 |
| Unemployment rate | 4.35 |
| Median home value | 727800 |
| Gini index | 0.4747 |
| Vacancy rate | 4.52 |
| White | 1093628 |
| Black | 80327 |
| Asian | 223582 |
| Native | 3246 |
| Hispanic/Latino | 151761 |
| Bachelor's or higher | 1044737 |
Source
- demographics: Census ACS 2023