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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

4.5 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

Jefferson Parish, LA

county

22051

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
430920	96631	254163	80126	65252	16.59	62.63	6.16	251400	0.4887	8.96	214484	109899	18338	4868	81368	125759

to	rel	area_weight
us/states/la/districts/01	in-district	0.712

to	rel	area_weight
us/states/la/districts/02	in-district	0.1719

to	rel	area_weight
us/states/la/districts/senate/8	in-district	0.5065

to	rel	area_weight
us/states/la/districts/senate/10	in-district	0.0429

to	rel	area_weight
us/states/la/districts/senate/7	in-district	0.0347

to	rel	area_weight
us/states/la/districts/senate/9	in-district	0.0267

to	rel	area_weight
us/states/la/districts/senate/5	in-district	0.0183

to	rel	area_weight
us/states/la/districts/senate/19	in-district	0.0179

to	rel	area_weight
us/states/la/districts/house/84	in-district	0.4181

to	rel	area_weight
us/states/la/districts/house/94	in-district	0.1528

to	rel	area_weight
us/states/la/districts/house/83	in-district	0.0895

to	rel	area_weight
us/states/la/districts/house/87	in-district	0.0297

to	rel	area_weight
us/states/la/districts/house/82	in-district	0.0217

to	rel	area_weight
us/states/la/districts/house/92	in-district	0.019

to	rel	area_weight
us/states/la/districts/house/78	in-district	0.0149

to	rel	area_weight
us/states/la/districts/house/85	in-district	0.0133

to	rel	area_weight
us/states/la/districts/house/79	in-district	0.0118

to	rel	area_weight
us/states/la/districts/house/54	in-district	0.0107

to	rel	area_weight
us/states/la/districts/house/80	in-district	0.0097

field	source
demographics	Census ACS 2023

field	source
districts	PostGIS area-intersection over Census TIGER 2024 boundaries

official

jurisdiction

county

2026-07-03

Jefferson Parish, LA

County jurisdiction — 1 officeholders mapped.

Demographics (ACS 2023)

Measure	Value
Population	430920
Under 18	96631
18–64	254163
65+	80126
Median household income	65252
Poverty rate	16.59
Homeownership rate	62.63
Unemployment rate	6.16
Median home value	251400
Gini index	0.4887
Vacancy rate	8.96
White	214484
Black	109899
Asian	18338
Native	4868
Hispanic/Latino	81368
Bachelor's or higher	125759

Districts

LA-01 — 71% (congressional)
LA-02 — 17% (congressional)
LA Senate District 8 — 51% (state senate)
LA Senate District 10 — 4% (state senate)
LA Senate District 7 — 3% (state senate)
LA Senate District 9 — 3% (state senate)
LA Senate District 5 — 2% (state senate)
LA Senate District 19 — 2% (state senate)
LA House District 84 — 42% (state house)
LA House District 94 — 15% (state house)
LA House District 83 — 9% (state house)
LA House District 87 — 3% (state house)
LA House District 82 — 2% (state house)
LA House District 92 — 2% (state house)
LA House District 78 — 1% (state house)
LA House District 85 — 1% (state house)
LA House District 79 — 1% (state house)
LA House District 54 — 1% (state house)
LA House District 80 — 1% (state house)

Source

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

4.5 KiB Raw Blame History Unescape Escape

Jefferson Parish, LA

Demographics (ACS 2023)

Districts

Source

4.5 KiB

Raw Blame History