Files
republic-os/data/jurisdictions/us/states/nc/counties/guilford/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

3.4 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 Guilford County, NC county 37081 NC
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
547940 120573 340183 87184 68642 14.58 59.95 4.57 259900 0.479 7.69 260614 185470 29591 1585 55083 195459
to rel area_weight
us/states/nc/districts/09 in-district 0.5404
to rel area_weight
us/states/nc/districts/05 in-district 0.3044
to rel area_weight
us/states/nc/districts/06 in-district 0.1553
to rel area_weight
us/states/nc/districts/senate/26 in-district 0.6278
to rel area_weight
us/states/nc/districts/senate/27 in-district 0.2307
to rel area_weight
us/states/nc/districts/senate/28 in-district 0.1415
to rel area_weight
us/states/nc/districts/house/59 in-district 0.4905
to rel area_weight
us/states/nc/districts/house/62 in-district 0.2427
to rel area_weight
us/states/nc/districts/house/58 in-district 0.0833
to rel area_weight
us/states/nc/districts/house/57 in-district 0.0751
to rel area_weight
us/states/nc/districts/house/60 in-district 0.0673
to rel area_weight
us/states/nc/districts/house/61 in-district 0.041
field source
demographics Census ACS 2023
field source
districts PostGIS area-intersection over Census TIGER 2024 boundaries
official
jurisdiction
county
nc
2026-07-03

Guilford County, NC

County jurisdiction — 3 officeholders mapped.

Demographics (ACS 2023)

Measure Value
Population 547940
Under 18 120573
1864 340183
65+ 87184
Median household income 68642
Poverty rate 14.58
Homeownership rate 59.95
Unemployment rate 4.57
Median home value 259900
Gini index 0.479
Vacancy rate 7.69
White 260614
Black 185470
Asian 29591
Native 1585
Hispanic/Latino 55083
Bachelor's or higher 195459

Districts

Source

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