Files
republic-os/data/jurisdictions/us/states/ca/counties/madera/index.md
T
Fabio 1beeaab2db Graph: national county↔district↔legislator authority layer
The first edges in the repo. Every US county now links to the districts it
sits in, weighted by area overlap, and every legislator links to the district
they represent — county → district → representative, traversable.

Data (PostGIS, no Atlas dependency — computed directly from geometry):
- data/county_district_edges.jsonl — 16,328 weighted edges. area_weight =
  ST_Area(ST_Intersection(county, district))/ST_Area(county) over ST_MakeValid
  Census TIGER 2024 geometries, overlaps <0.5% dropped. Uses area-intersection,
  NOT centroid-in-polygon, so urban districts that carve through counties
  (e.g. GA CD-5 / Atlanta across Clayton+DeKalb+Fulton) are captured, not
  silently dropped. Per-county weights sum to ~1.0 per district type.

build.py:
- ~6,896 new district nodes: 435 CD (ACS demographics where available; sparse
  for the 8 states missing from acs_cd) + 4,927 state-house + 1,897 state-senate
  (geometry-only). GEOID/number-keyed, stable.
- county index.md gains a `districts:` block (frontmatter) + a ## Districts
  section (body links, so link-integrity checks them).
- legislators + US House members gain `represents:` pointing at their district
  node; edge stored once on the person, inverse left to the view.
- schemas/jurisdiction: classification enum + chamber/districts fields.

Honest gaps (logged, not hidden): ID + NH have no state-house geometry, so
their house districts get nodes (represents resolves) but no county edges;
CD nodes for acs_cd-missing states are demographically sparse.

Deterministic (byte-identical rebuild); validate.py passes 26,617 records,
link-integrity clean (every district/represents link resolves).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-07-04 22:28:08 -04:00

2.3 KiB
Raw Blame History

type, title, classification, fips, state, demographics, districts, sources, confidence, tags, timestamp
type title classification fips state demographics districts sources confidence tags timestamp
Jurisdiction Madera County, CA county 06039 CA
population population_under_18 population_18_64 population_65_plus median_household_income poverty_rate homeownership_rate unemployment_rate median_home_value gini_index vacancy_rate race_white race_black race_asian race_native hispanic bachelors_plus
160940 43672 94120 23148 76627 19.2 67.46 10.12 393200 0.4591 11.05 60715 4158 3846 3326 98083 24432
to rel area_weight
us/states/ca/districts/05 in-district 0.686
to rel area_weight
us/states/ca/districts/13 in-district 0.313
to rel area_weight
us/states/ca/districts/senate/4 in-district 0.7378
to rel area_weight
us/states/ca/districts/senate/14 in-district 0.2621
to rel area_weight
us/states/ca/districts/house/8 in-district 0.7751
to rel area_weight
us/states/ca/districts/house/27 in-district 0.2249
field source
demographics Census ACS 2023
field source
districts PostGIS area-intersection over Census TIGER 2024 boundaries
official
jurisdiction
county
ca
2026-07-03

Madera County, CA

County jurisdiction.

Demographics (ACS 2023)

Measure Value
Population 160940
Under 18 43672
1864 94120
65+ 23148
Median household income 76627
Poverty rate 19.2
Homeownership rate 67.46
Unemployment rate 10.12
Median home value 393200
Gini index 0.4591
Vacancy rate 11.05
White 60715
Black 4158
Asian 3846
Native 3326
Hispanic/Latino 98083
Bachelor's or higher 24432

Districts

Source

  • demographics: Census ACS 2023
  • districts: PostGIS area-intersection over Census TIGER 2024 boundaries