Files
republic-os/data/jurisdictions/us/states/pa/counties/lancaster/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

3.6 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 Lancaster County, PA county 42071 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
557931 128950 319547 109434 86959 8.19 69.82 3.37 301100 0.4301 2.95 455405 22388 13540 1162 64326 168247
to rel area_weight
us/states/pa/districts/11 in-district 0.9979
to rel area_weight
us/states/pa/districts/senate/13 in-district 0.5488
to rel area_weight
us/states/pa/districts/senate/36 in-district 0.3506
to rel area_weight
us/states/pa/districts/senate/48 in-district 0.1003
to rel area_weight
us/states/pa/districts/house/100 in-district 0.314
to rel area_weight
us/states/pa/districts/house/37 in-district 0.1441
to rel area_weight
us/states/pa/districts/house/99 in-district 0.1396
to rel area_weight
us/states/pa/districts/house/97 in-district 0.1215
to rel area_weight
us/states/pa/districts/house/43 in-district 0.1038
to rel area_weight
us/states/pa/districts/house/98 in-district 0.0934
to rel area_weight
us/states/pa/districts/house/41 in-district 0.0498
to rel area_weight
us/states/pa/districts/house/96 in-district 0.0219
to rel area_weight
us/states/pa/districts/house/49 in-district 0.0116
field source
demographics Census ACS 2023
field source
districts PostGIS area-intersection over Census TIGER 2024 boundaries
official
jurisdiction
county
pa
2026-07-03

Lancaster County, PA

County jurisdiction — 1 officeholders mapped.

Demographics (ACS 2023)

Measure Value
Population 557931
Under 18 128950
1864 319547
65+ 109434
Median household income 86959
Poverty rate 8.19
Homeownership rate 69.82
Unemployment rate 3.37
Median home value 301100
Gini index 0.4301
Vacancy rate 2.95
White 455405
Black 22388
Asian 13540
Native 1162
Hispanic/Latino 64326
Bachelor's or higher 168247

Districts

Source

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