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

2.7 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 Kalamazoo County, MI county 26077 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
262375 55906 164129 42340 72532 12.66 64.52 5.51 241800 0.4734 6.79 199261 28850 7470 954 15483 96419
to rel area_weight
us/states/mi/districts/04 in-district 0.7509
to rel area_weight
us/states/mi/districts/05 in-district 0.2491
to rel area_weight
us/states/mi/districts/senate/19 in-district 0.8754
to rel area_weight
us/states/mi/districts/senate/18 in-district 0.1246
to rel area_weight
us/states/mi/districts/house/42 in-district 0.5836
to rel area_weight
us/states/mi/districts/house/45 in-district 0.1858
to rel area_weight
us/states/mi/districts/house/40 in-district 0.1735
to rel area_weight
us/states/mi/districts/house/41 in-district 0.0571
field source
demographics Census ACS 2023
field source
districts PostGIS area-intersection over Census TIGER 2024 boundaries
official
jurisdiction
county
mi
2026-07-03

Kalamazoo County, MI

County jurisdiction — 1 officeholders mapped.

Demographics (ACS 2023)

Measure Value
Population 262375
Under 18 55906
1864 164129
65+ 42340
Median household income 72532
Poverty rate 12.66
Homeownership rate 64.52
Unemployment rate 5.51
Median home value 241800
Gini index 0.4734
Vacancy rate 6.79
White 199261
Black 28850
Asian 7470
Native 954
Hispanic/Latino 15483
Bachelor's or higher 96419

Districts

Source

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