Files
republic-os/data/jurisdictions/us/states/sc/counties/pickens/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

2.7 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 Pickens County, SC county 45077 SC
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
134629 25021 86282 23326 61064 17.17 70.9 3.63 231900 0.4933 10.67 113363 7765 2209 312 7236 35080
to rel area_weight
us/states/sc/districts/03 in-district 0.9974
to rel area_weight
us/states/sc/districts/senate/2 in-district 0.9122
to rel area_weight
us/states/sc/districts/senate/1 in-district 0.0873
to rel area_weight
us/states/sc/districts/house/4 in-district 0.4962
to rel area_weight
us/states/sc/districts/house/1 in-district 0.2086
to rel area_weight
us/states/sc/districts/house/3 in-district 0.1778
to rel area_weight
us/states/sc/districts/house/5 in-district 0.1039
to rel area_weight
us/states/sc/districts/house/10 in-district 0.0119
field source
demographics Census ACS 2023
field source
districts PostGIS area-intersection over Census TIGER 2024 boundaries
official
jurisdiction
county
sc
2026-07-03

Pickens County, SC

County jurisdiction.

Demographics (ACS 2023)

Measure Value
Population 134629
Under 18 25021
1864 86282
65+ 23326
Median household income 61064
Poverty rate 17.17
Homeownership rate 70.9
Unemployment rate 3.63
Median home value 231900
Gini index 0.4933
Vacancy rate 10.67
White 113363
Black 7765
Asian 2209
Native 312
Hispanic/Latino 7236
Bachelor's or higher 35080

Districts

Source

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