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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

3.9 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

Washington County, AR

county

05143

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
256765	60304	164774	31687	70639	14.59	55.62	3.43	298400	0.4756	7.85	160940	7797	6168	3006	47853	79177

to	rel	area_weight
us/states/ar/districts/03	in-district	0.9999

to	rel	area_weight
us/states/ar/districts/senate/29	in-district	0.4951

to	rel	area_weight
us/states/ar/districts/senate/35	in-district	0.318

to	rel	area_weight
us/states/ar/districts/senate/31	in-district	0.0707

to	rel	area_weight
us/states/ar/districts/senate/32	in-district	0.0618

to	rel	area_weight
us/states/ar/districts/senate/30	in-district	0.0542

to	rel	area_weight
us/states/ar/districts/house/25	in-district	0.3616

to	rel	area_weight
us/states/ar/districts/house/23	in-district	0.3023

to	rel	area_weight
us/states/ar/districts/house/24	in-district	0.1501

to	rel	area_weight
us/states/ar/districts/house/18	in-district	0.0616

to	rel	area_weight
us/states/ar/districts/house/22	in-district	0.0337

to	rel	area_weight
us/states/ar/districts/house/20	in-district	0.0311

to	rel	area_weight
us/states/ar/districts/house/19	in-district	0.0223

to	rel	area_weight
us/states/ar/districts/house/9	in-district	0.0198

to	rel	area_weight
us/states/ar/districts/house/21	in-district	0.0127

field	source
demographics	Census ACS 2023

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

official

jurisdiction

county

2026-07-03

Washington County, AR

County jurisdiction — 1 officeholders mapped.

Demographics (ACS 2023)

Measure	Value
Population	256765
Under 18	60304
18–64	164774
65+	31687
Median household income	70639
Poverty rate	14.59
Homeownership rate	55.62
Unemployment rate	3.43
Median home value	298400
Gini index	0.4756
Vacancy rate	7.85
White	160940
Black	7797
Asian	6168
Native	3006
Hispanic/Latino	47853
Bachelor's or higher	79177

Districts

AR-03 — 100% (congressional)
AR Senate District 29 — 50% (state senate)
AR Senate District 35 — 32% (state senate)
AR Senate District 31 — 7% (state senate)
AR Senate District 32 — 6% (state senate)
AR Senate District 30 — 5% (state senate)
AR House District 25 — 36% (state house)
AR House District 23 — 30% (state house)
AR House District 24 — 15% (state house)
AR House District 18 — 6% (state house)
AR House District 22 — 3% (state house)
AR House District 20 — 3% (state house)
AR House District 19 — 2% (state house)
AR House District 9 — 2% (state house)
AR House District 21 — 1% (state house)

Source

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

3.9 KiB Raw Blame History Unescape Escape

Washington County, AR

Demographics (ACS 2023)

Districts

Source

3.9 KiB

Raw Blame History