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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

Shelby County, AL

county

01117

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
235969	58029	75546	102394	102265	6.34	80.99	2.74	349200	0.4183	3.93	175573	33652	5294	752	18735	108456

to	rel	area_weight
us/states/al/districts/06	in-district	0.9977

to	rel	area_weight
us/states/al/districts/senate/15	in-district	0.3785

to	rel	area_weight
us/states/al/districts/senate/11	in-district	0.2895

to	rel	area_weight
us/states/al/districts/senate/14	in-district	0.2821

to	rel	area_weight
us/states/al/districts/senate/16	in-district	0.0499

to	rel	area_weight
us/states/al/districts/house/41	in-district	0.548

to	rel	area_weight
us/states/al/districts/house/49	in-district	0.1703

to	rel	area_weight
us/states/al/districts/house/45	in-district	0.1235

to	rel	area_weight
us/states/al/districts/house/43	in-district	0.0653

to	rel	area_weight
us/states/al/districts/house/73	in-district	0.0637

to	rel	area_weight
us/states/al/districts/house/15	in-district	0.0149

to	rel	area_weight
us/states/al/districts/house/48	in-district	0.0143

field	source
demographics	Census ACS 2023

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

official

jurisdiction

county

2026-07-03

Shelby County, AL

County jurisdiction — 1 officeholders mapped.

Demographics (ACS 2023)

Measure	Value
Population	235969
Under 18	58029
18–64	75546
65+	102394
Median household income	102265
Poverty rate	6.34
Homeownership rate	80.99
Unemployment rate	2.74
Median home value	349200
Gini index	0.4183
Vacancy rate	3.93
White	175573
Black	33652
Asian	5294
Native	752
Hispanic/Latino	18735
Bachelor's or higher	108456

Districts

AL-06 — 100% (congressional)
AL Senate District 15 — 38% (state senate)
AL Senate District 11 — 29% (state senate)
AL Senate District 14 — 28% (state senate)
AL Senate District 16 — 5% (state senate)
AL House District 41 — 55% (state house)
AL House District 49 — 17% (state house)
AL House District 45 — 12% (state house)
AL House District 43 — 7% (state house)
AL House District 73 — 6% (state house)
AL House District 15 — 1% (state house)
AL 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

Shelby County, AL

Demographics (ACS 2023)

Districts

Source

3.4 KiB

Raw Blame History