Files
republic-os/data/jurisdictions/us/states/ga/counties/columbia/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

2.6 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 Columbia County, GA county 13073 GA
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
162434 40356 97523 24555 95592 7.47 78.14 4.8 305300 0.4087 10.57 106632 30909 7859 434 12985 60398
to rel area_weight
us/states/ga/districts/12 in-district 0.9999
to rel area_weight
us/states/ga/districts/senate/24 in-district 0.6988
to rel area_weight
us/states/ga/districts/senate/23 in-district 0.301
to rel area_weight
us/states/ga/districts/house/125 in-district 0.5943
to rel area_weight
us/states/ga/districts/house/123 in-district 0.1984
to rel area_weight
us/states/ga/districts/house/131 in-district 0.1347
to rel area_weight
us/states/ga/districts/house/127 in-district 0.0724
field source
demographics Census ACS 2023
field source
districts PostGIS area-intersection over Census TIGER 2024 boundaries
official
jurisdiction
county
ga
2026-07-03

Columbia County, GA

County jurisdiction.

Demographics (ACS 2023)

Measure Value
Population 162434
Under 18 40356
1864 97523
65+ 24555
Median household income 95592
Poverty rate 7.47
Homeownership rate 78.14
Unemployment rate 4.8
Median home value 305300
Gini index 0.4087
Vacancy rate 10.57
White 106632
Black 30909
Asian 7859
Native 434
Hispanic/Latino 12985
Bachelor's or higher 60398

Districts

Source

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