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republic-os/data/jurisdictions/us/states/la/counties/vermilion-parish/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 Vermilion Parish, LA county 22113 LA
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
57123 14409 33207 9507 55707 20.16 73.36 5.17 163300 0.466 16.62 44444 7352 1128 65 2574 8194
to rel area_weight
us/states/la/districts/03 in-district 0.8466
to rel area_weight
us/states/la/districts/senate/26 in-district 0.8452
to rel area_weight
us/states/la/districts/house/47 in-district 0.7446
to rel area_weight
us/states/la/districts/house/49 in-district 0.0734
to rel area_weight
us/states/la/districts/house/31 in-district 0.0272
field source
demographics Census ACS 2023
field source
districts PostGIS area-intersection over Census TIGER 2024 boundaries
official
jurisdiction
county
la
2026-07-03

Vermilion Parish, LA

County jurisdiction — 1 officeholders mapped.

Demographics (ACS 2023)

Measure Value
Population 57123
Under 18 14409
1864 33207
65+ 9507
Median household income 55707
Poverty rate 20.16
Homeownership rate 73.36
Unemployment rate 5.17
Median home value 163300
Gini index 0.466
Vacancy rate 16.62
White 44444
Black 7352
Asian 1128
Native 65
Hispanic/Latino 2574
Bachelor's or higher 8194

Districts

Source

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