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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

3.4 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

Sebastian County, AR

county

05131

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
128900	30628	76313	21959	57790	15.97	61.39	5.46	176200	0.5061	9.2	87701	6646	5743	1038	20635	28304

to	rel	area_weight
us/states/ar/districts/03	in-district	0.5999

to	rel	area_weight
us/states/ar/districts/04	in-district	0.3998

to	rel	area_weight
us/states/ar/districts/senate/5	in-district	0.4662

to	rel	area_weight
us/states/ar/districts/senate/26	in-district	0.4096

to	rel	area_weight
us/states/ar/districts/senate/27	in-district	0.1239

to	rel	area_weight
us/states/ar/districts/house/47	in-district	0.584

to	rel	area_weight
us/states/ar/districts/house/52	in-district	0.2254

to	rel	area_weight
us/states/ar/districts/house/51	in-district	0.069

to	rel	area_weight
us/states/ar/districts/house/46	in-district	0.055

to	rel	area_weight
us/states/ar/districts/house/50	in-district	0.0286

to	rel	area_weight
us/states/ar/districts/house/49	in-district	0.0267

to	rel	area_weight
us/states/ar/districts/house/48	in-district	0.011

field	source
demographics	Census ACS 2023

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

official

jurisdiction

county

2026-07-03

Sebastian County, AR

County jurisdiction — 1 officeholders mapped.

Demographics (ACS 2023)

Measure	Value
Population	128900
Under 18	30628
18–64	76313
65+	21959
Median household income	57790
Poverty rate	15.97
Homeownership rate	61.39
Unemployment rate	5.46
Median home value	176200
Gini index	0.5061
Vacancy rate	9.2
White	87701
Black	6646
Asian	5743
Native	1038
Hispanic/Latino	20635
Bachelor's or higher	28304

Districts

AR-03 — 60% (congressional)
AR-04 — 40% (congressional)
AR Senate District 5 — 47% (state senate)
AR Senate District 26 — 41% (state senate)
AR Senate District 27 — 12% (state senate)
AR House District 47 — 58% (state house)
AR House District 52 — 23% (state house)
AR House District 51 — 7% (state house)
AR House District 46 — 6% (state house)
AR House District 50 — 3% (state house)
AR House District 49 — 3% (state house)
AR House District 48 — 1% (state house)

Source

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

3.4 KiB Raw Blame History Unescape Escape

Sebastian County, AR

Demographics (ACS 2023)

Districts

Source

3.4 KiB

Raw Blame History