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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

Mobile County, AL

county

01097

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
412590	96039	244988	71563	58880	16.23	66.03	5.26	190700	0.4707	13.12	229432	147984	8896	1747	14244	98710

to	rel	area_weight
us/states/al/districts/01	in-district	0.4667

to	rel	area_weight
us/states/al/districts/02	in-district	0.3181

to	rel	area_weight
us/states/al/districts/senate/34	in-district	0.464

to	rel	area_weight
us/states/al/districts/senate/35	in-district	0.2066

to	rel	area_weight
us/states/al/districts/senate/33	in-district	0.0583

to	rel	area_weight
us/states/al/districts/senate/22	in-district	0.0427

to	rel	area_weight
us/states/al/districts/house/102	in-district	0.3467

to	rel	area_weight
us/states/al/districts/house/105	in-district	0.1628

to	rel	area_weight
us/states/al/districts/house/98	in-district	0.0891

to	rel	area_weight
us/states/al/districts/house/100	in-district	0.0445

to	rel	area_weight
us/states/al/districts/house/97	in-district	0.0366

to	rel	area_weight
us/states/al/districts/house/99	in-district	0.0317

to	rel	area_weight
us/states/al/districts/house/101	in-district	0.025

to	rel	area_weight
us/states/al/districts/house/104	in-district	0.0184

to	rel	area_weight
us/states/al/districts/house/103	in-district	0.0166

field	source
demographics	Census ACS 2023

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

official

jurisdiction

county

2026-07-03

Mobile County, AL

County jurisdiction — 4 officeholders mapped.

Demographics (ACS 2023)

Measure	Value
Population	412590
Under 18	96039
18–64	244988
65+	71563
Median household income	58880
Poverty rate	16.23
Homeownership rate	66.03
Unemployment rate	5.26
Median home value	190700
Gini index	0.4707
Vacancy rate	13.12
White	229432
Black	147984
Asian	8896
Native	1747
Hispanic/Latino	14244
Bachelor's or higher	98710

Districts

AL-01 — 47% (congressional)
AL-02 — 32% (congressional)
AL Senate District 34 — 46% (state senate)
AL Senate District 35 — 21% (state senate)
AL Senate District 33 — 6% (state senate)
AL Senate District 22 — 4% (state senate)
AL House District 102 — 35% (state house)
AL House District 105 — 16% (state house)
AL House District 98 — 9% (state house)
AL House District 100 — 4% (state house)
AL House District 97 — 4% (state house)
AL House District 99 — 3% (state house)
AL House District 101 — 2% (state house)
AL House District 104 — 2% (state house)
AL House District 103 — 2% (state house)

Source

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

3.9 KiB Raw Blame History Unescape Escape

Mobile County, AL

Demographics (ACS 2023)

Districts

Source

3.9 KiB

Raw Blame History