Files
republic-os/data/jurisdictions/us/states/va/counties/henrico/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

3.0 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 Henrico County, VA county 51087 VA
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
335744 73554 205272 56918 88783 8.79 64.48 3.88 359200 0.4713 5.21 169578 98584 31613 745 23193 155518
to rel area_weight
us/states/va/districts/04 in-district 0.697
to rel area_weight
us/states/va/districts/01 in-district 0.3018
to rel area_weight
us/states/va/districts/senate/13 in-district 0.5566
to rel area_weight
us/states/va/districts/senate/16 in-district 0.3479
to rel area_weight
us/states/va/districts/senate/14 in-district 0.0943
to rel area_weight
us/states/va/districts/house/81 in-district 0.5435
to rel area_weight
us/states/va/districts/house/80 in-district 0.162
to rel area_weight
us/states/va/districts/house/58 in-district 0.1319
to rel area_weight
us/states/va/districts/house/57 in-district 0.1093
to rel area_weight
us/states/va/districts/house/59 in-district 0.0526
field source
demographics Census ACS 2023
field source
districts PostGIS area-intersection over Census TIGER 2024 boundaries
official
jurisdiction
county
va
2026-07-03

Henrico County, VA

County jurisdiction.

Demographics (ACS 2023)

Measure Value
Population 335744
Under 18 73554
1864 205272
65+ 56918
Median household income 88783
Poverty rate 8.79
Homeownership rate 64.48
Unemployment rate 3.88
Median home value 359200
Gini index 0.4713
Vacancy rate 5.21
White 169578
Black 98584
Asian 31613
Native 745
Hispanic/Latino 23193
Bachelor's or higher 155518

Districts

Source

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