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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

Lehigh County, PA

county

42077

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
378792	84498	227286	67008	80079	11.57	65.57	5.88	300400	0.4653	4.52	236150	24476	13517	1801	105976	123421

to	rel	area_weight
us/states/pa/districts/07	in-district	0.9993

to	rel	area_weight
us/states/pa/districts/senate/16	in-district	0.8272

to	rel	area_weight
us/states/pa/districts/senate/14	in-district	0.1598

to	rel	area_weight
us/states/pa/districts/senate/18	in-district	0.0126

to	rel	area_weight
us/states/pa/districts/house/187	in-district	0.4424

to	rel	area_weight
us/states/pa/districts/house/131	in-district	0.1881

to	rel	area_weight
us/states/pa/districts/house/183	in-district	0.1266

to	rel	area_weight
us/states/pa/districts/house/132	in-district	0.1001

to	rel	area_weight
us/states/pa/districts/house/133	in-district	0.0695

to	rel	area_weight
us/states/pa/districts/house/134	in-district	0.0383

to	rel	area_weight
us/states/pa/districts/house/22	in-district	0.0348

field	source
demographics	Census ACS 2023

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

official

jurisdiction

county

2026-07-03

Lehigh County, PA

County jurisdiction — 1 officeholders mapped.

Demographics (ACS 2023)

Measure	Value
Population	378792
Under 18	84498
18–64	227286
65+	67008
Median household income	80079
Poverty rate	11.57
Homeownership rate	65.57
Unemployment rate	5.88
Median home value	300400
Gini index	0.4653
Vacancy rate	4.52
White	236150
Black	24476
Asian	13517
Native	1801
Hispanic/Latino	105976
Bachelor's or higher	123421

Districts

PA-07 — 100% (congressional)
PA Senate District 16 — 83% (state senate)
PA Senate District 14 — 16% (state senate)
PA Senate District 18 — 1% (state senate)
PA House District 187 — 44% (state house)
PA House District 131 — 19% (state house)
PA House District 183 — 13% (state house)
PA House District 132 — 10% (state house)
PA House District 133 — 7% (state house)
PA House District 134 — 4% (state house)
PA House District 22 — 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

Lehigh County, PA

Demographics (ACS 2023)

Districts

Source

3.3 KiB

Raw Blame History