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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

3.1 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

Winnebago County, IL

county

17201

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
283292	66531	164243	52518	65837	15.62	65.86	7.26	164500	0.4496	7.19	188087	34098	8280	1849	44014	66985

to	rel	area_weight
us/states/il/districts/16	in-district	0.7549

to	rel	area_weight
us/states/il/districts/17	in-district	0.245

to	rel	area_weight
us/states/il/districts/senate/45	in-district	0.7574

to	rel	area_weight
us/states/il/districts/senate/34	in-district	0.2279

to	rel	area_weight
us/states/il/districts/senate/35	in-district	0.0146

to	rel	area_weight
us/states/il/districts/house/90	in-district	0.4563

to	rel	area_weight
us/states/il/districts/house/89	in-district	0.3011

to	rel	area_weight
us/states/il/districts/house/67	in-district	0.1681

to	rel	area_weight
us/states/il/districts/house/68	in-district	0.0599

to	rel	area_weight
us/states/il/districts/house/69	in-district	0.0146

field	source
demographics	Census ACS 2023

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

official

jurisdiction

county

2026-07-03

Winnebago County, IL

County jurisdiction — 2 officeholders mapped.

Demographics (ACS 2023)

Measure	Value
Population	283292
Under 18	66531
18–64	164243
65+	52518
Median household income	65837
Poverty rate	15.62
Homeownership rate	65.86
Unemployment rate	7.26
Median home value	164500
Gini index	0.4496
Vacancy rate	7.19
White	188087
Black	34098
Asian	8280
Native	1849
Hispanic/Latino	44014
Bachelor's or higher	66985

Districts

IL-16 — 75% (congressional)
IL-17 — 24% (congressional)
IL Senate District 45 — 76% (state senate)
IL Senate District 34 — 23% (state senate)
IL Senate District 35 — 1% (state senate)
IL House District 90 — 46% (state house)
IL House District 89 — 30% (state house)
IL House District 67 — 17% (state house)
IL House District 68 — 6% (state house)
IL House District 69 — 1% (state house)

Source

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

3.1 KiB Raw Blame History Unescape Escape

Winnebago County, IL

Demographics (ACS 2023)

Districts

Source

3.1 KiB

Raw Blame History