Files
republic-os/data/jurisdictions/us/states/in/counties/clark/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

2.2 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 Clark County, IN county 18019 IN
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
124354 27419 76138 20797 74214 10.2 74.74 4.01 222900 0.4143 6.92 101612 9069 1514 429 8547 32186
to rel area_weight
us/states/in/districts/09 in-district 0.9983
to rel area_weight
us/states/in/districts/senate/45 in-district 0.9989
to rel area_weight
us/states/in/districts/house/66 in-district 0.7254
to rel area_weight
us/states/in/districts/house/70 in-district 0.1748
to rel area_weight
us/states/in/districts/house/71 in-district 0.0988
field source
demographics Census ACS 2023
field source
districts PostGIS area-intersection over Census TIGER 2024 boundaries
official
jurisdiction
county
in
2026-07-03

Clark County, IN

County jurisdiction.

Demographics (ACS 2023)

Measure Value
Population 124354
Under 18 27419
1864 76138
65+ 20797
Median household income 74214
Poverty rate 10.2
Homeownership rate 74.74
Unemployment rate 4.01
Median home value 222900
Gini index 0.4143
Vacancy rate 6.92
White 101612
Black 9069
Asian 1514
Native 429
Hispanic/Latino 8547
Bachelor's or higher 32186

Districts

Source

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