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republic-os/data/jurisdictions/us/states/pa/counties/allegheny/index.md
T
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

6.1 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 Allegheny County, PA county 42003 PA
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
1238177 230228 758063 249886 78548 11.52 65.17 5.04 227600 0.4852 10.06 941697 154273 53826 1255 36691 585673
to rel area_weight
us/states/pa/districts/17 in-district 0.6254
to rel area_weight
us/states/pa/districts/12 in-district 0.3733
to rel area_weight
us/states/pa/districts/senate/37 in-district 0.3383
to rel area_weight
us/states/pa/districts/senate/38 in-district 0.2778
to rel area_weight
us/states/pa/districts/senate/45 in-district 0.2237
to rel area_weight
us/states/pa/districts/senate/42 in-district 0.0807
to rel area_weight
us/states/pa/districts/senate/43 in-district 0.0792
to rel area_weight
us/states/pa/districts/house/44 in-district 0.1453
to rel area_weight
us/states/pa/districts/house/28 in-district 0.1184
to rel area_weight
us/states/pa/districts/house/33 in-district 0.1064
to rel area_weight
us/states/pa/districts/house/39 in-district 0.0971
to rel area_weight
us/states/pa/districts/house/30 in-district 0.0619
to rel area_weight
us/states/pa/districts/house/45 in-district 0.0598
to rel area_weight
us/states/pa/districts/house/32 in-district 0.0572
to rel area_weight
us/states/pa/districts/house/25 in-district 0.0523
to rel area_weight
us/states/pa/districts/house/35 in-district 0.0423
to rel area_weight
us/states/pa/districts/house/38 in-district 0.0391
to rel area_weight
us/states/pa/districts/house/46 in-district 0.0281
to rel area_weight
us/states/pa/districts/house/21 in-district 0.0269
to rel area_weight
us/states/pa/districts/house/20 in-district 0.0259
to rel area_weight
us/states/pa/districts/house/27 in-district 0.0224
to rel area_weight
us/states/pa/districts/house/40 in-district 0.0221
to rel area_weight
us/states/pa/districts/house/34 in-district 0.0216
to rel area_weight
us/states/pa/districts/house/42 in-district 0.0187
to rel area_weight
us/states/pa/districts/house/19 in-district 0.0175
to rel area_weight
us/states/pa/districts/house/36 in-district 0.0142
to rel area_weight
us/states/pa/districts/house/24 in-district 0.0123
to rel area_weight
us/states/pa/districts/house/23 in-district 0.01
field source
demographics Census ACS 2023
field source
districts PostGIS area-intersection over Census TIGER 2024 boundaries
official
jurisdiction
county
pa
2026-07-03

Allegheny County, PA

County jurisdiction — 2 officeholders mapped.

Demographics (ACS 2023)

Measure Value
Population 1238177
Under 18 230228
18–64 758063
65+ 249886
Median household income 78548
Poverty rate 11.52
Homeownership rate 65.17
Unemployment rate 5.04
Median home value 227600
Gini index 0.4852
Vacancy rate 10.06
White 941697
Black 154273
Asian 53826
Native 1255
Hispanic/Latino 36691
Bachelor's or higher 585673

Districts

Source

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