Files
republic-os/data/jurisdictions/us/states/mi/counties/allegan/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

3.0 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 Allegan County, MI county 26005 MI
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
121456 28212 70866 22378 83283 8.37 87.37 2.96 267100 0.4151 13.52 105919 1483 838 539 9856 30453
to rel area_weight
us/states/mi/districts/04 in-district 0.4596
to rel area_weight
us/states/mi/districts/senate/20 in-district 0.29
to rel area_weight
us/states/mi/districts/senate/18 in-district 0.1375
to rel area_weight
us/states/mi/districts/senate/31 in-district 0.0318
to rel area_weight
us/states/mi/districts/house/43 in-district 0.2714
to rel area_weight
us/states/mi/districts/house/39 in-district 0.0713
to rel area_weight
us/states/mi/districts/house/38 in-district 0.054
to rel area_weight
us/states/mi/districts/house/42 in-district 0.0269
to rel area_weight
us/states/mi/districts/house/79 in-district 0.0195
to rel area_weight
us/states/mi/districts/house/86 in-district 0.0163
field source
demographics Census ACS 2023
field source
districts PostGIS area-intersection over Census TIGER 2024 boundaries
official
jurisdiction
county
mi
2026-07-03

Allegan County, MI

County jurisdiction.

Demographics (ACS 2023)

Measure Value
Population 121456
Under 18 28212
1864 70866
65+ 22378
Median household income 83283
Poverty rate 8.37
Homeownership rate 87.37
Unemployment rate 2.96
Median home value 267100
Gini index 0.4151
Vacancy rate 13.52
White 105919
Black 1483
Asian 838
Native 539
Hispanic/Latino 9856
Bachelor's or higher 30453

Districts

Source

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