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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

3.3 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

Union County, NJ

county

34039

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
579290	136260	355753	87277	103202	9.18	57.36	6.51	529200	0.4834	4.29	228008	115397	32637	3233	203905	215946

to	rel	area_weight
us/states/nj/districts/07	in-district	0.561

to	rel	area_weight
us/states/nj/districts/10	in-district	0.2478

to	rel	area_weight
us/states/nj/districts/08	in-district	0.1284

to	rel	area_weight
us/states/nj/districts/12	in-district	0.0569

to	rel	area_weight
us/states/nj/districts/senate/22	in-district	0.4005

to	rel	area_weight
us/states/nj/districts/senate/21	in-district	0.3096

to	rel	area_weight
us/states/nj/districts/senate/20	in-district	0.2508

to	rel	area_weight
us/states/nj/districts/senate/28	in-district	0.0265

to	rel	area_weight
us/states/nj/districts/house/22	in-district	0.4005

to	rel	area_weight
us/states/nj/districts/house/21	in-district	0.3096

to	rel	area_weight
us/states/nj/districts/house/20	in-district	0.2508

to	rel	area_weight
us/states/nj/districts/house/28	in-district	0.0265

field	source
demographics	Census ACS 2023

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

official

jurisdiction

county

2026-07-03

Union County, NJ

County jurisdiction — 5 officeholders mapped.

Demographics (ACS 2023)

Measure	Value
Population	579290
Under 18	136260
18–64	355753
65+	87277
Median household income	103202
Poverty rate	9.18
Homeownership rate	57.36
Unemployment rate	6.51
Median home value	529200
Gini index	0.4834
Vacancy rate	4.29
White	228008
Black	115397
Asian	32637
Native	3233
Hispanic/Latino	203905
Bachelor's or higher	215946

Districts

NJ-07 — 56% (congressional)
NJ-10 — 25% (congressional)
NJ-08 — 13% (congressional)
NJ-12 — 6% (congressional)
NJ Senate District 22 — 40% (state senate)
NJ Senate District 21 — 31% (state senate)
NJ Senate District 20 — 25% (state senate)
NJ Senate District 28 — 3% (state senate)
NJ House District 22 — 40% (state house)
NJ House District 21 — 31% (state house)
NJ House District 20 — 25% (state house)
NJ House District 28 — 3% (state house)

Source

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

3.3 KiB Raw Blame History Unescape Escape

Union County, NJ

Demographics (ACS 2023)

Districts

Source

3.3 KiB

Raw Blame History