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republic-os/data/jurisdictions/us/states/la/counties/st-john-the-baptist-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 St. John the Baptist Parish, LA county 22095 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
40743 9799 24556 6388 66630 14.42 77.46 10.86 193200 0.4259 14.98 12614 23210 362 147 3646 6833
to rel area_weight
us/states/la/districts/02 in-district 0.9975
to rel area_weight
us/states/la/districts/senate/19 in-district 0.7383
to rel area_weight
us/states/la/districts/senate/2 in-district 0.2616
to rel area_weight
us/states/la/districts/house/57 in-district 0.6421
to rel area_weight
us/states/la/districts/house/58 in-district 0.3561
field source
demographics Census ACS 2023
field source
districts PostGIS area-intersection over Census TIGER 2024 boundaries
official
jurisdiction
county
la
2026-07-03

St. John the Baptist Parish, LA

County jurisdiction.

Demographics (ACS 2023)

Measure Value
Population 40743
Under 18 9799
18–64 24556
65+ 6388
Median household income 66630
Poverty rate 14.42
Homeownership rate 77.46
Unemployment rate 10.86
Median home value 193200
Gini index 0.4259
Vacancy rate 14.98
White 12614
Black 23210
Asian 362
Native 147
Hispanic/Latino 3646
Bachelor's or higher 6833

Districts

Source

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