Files
republic-os/data/jurisdictions/us/states/al/counties/jefferson/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

5.7 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 Jefferson County, AL county 01073 AL
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
667755 153183 402504 112068 66388 15.7 63.89 4.73 240000 0.5084 13.16 323438 282024 12439 2099 36545 231370
to rel area_weight
us/states/al/districts/07 in-district 0.5966
to rel area_weight
us/states/al/districts/06 in-district 0.4015
to rel area_weight
us/states/al/districts/senate/19 in-district 0.2757
to rel area_weight
us/states/al/districts/senate/17 in-district 0.2297
to rel area_weight
us/states/al/districts/senate/5 in-district 0.1983
to rel area_weight
us/states/al/districts/senate/20 in-district 0.1241
to rel area_weight
us/states/al/districts/senate/15 in-district 0.0748
to rel area_weight
us/states/al/districts/senate/18 in-district 0.0575
to rel area_weight
us/states/al/districts/senate/16 in-district 0.0399
to rel area_weight
us/states/al/districts/house/16 in-district 0.2149
to rel area_weight
us/states/al/districts/house/51 in-district 0.1781
to rel area_weight
us/states/al/districts/house/60 in-district 0.0813
to rel area_weight
us/states/al/districts/house/44 in-district 0.0761
to rel area_weight
us/states/al/districts/house/15 in-district 0.0738
to rel area_weight
us/states/al/districts/house/57 in-district 0.0679
to rel area_weight
us/states/al/districts/house/56 in-district 0.0532
to rel area_weight
us/states/al/districts/house/59 in-district 0.0502
to rel area_weight
us/states/al/districts/house/45 in-district 0.0363
to rel area_weight
us/states/al/districts/house/58 in-district 0.0279
to rel area_weight
us/states/al/districts/house/14 in-district 0.0276
to rel area_weight
us/states/al/districts/house/48 in-district 0.0263
to rel area_weight
us/states/al/districts/house/55 in-district 0.0202
to rel area_weight
us/states/al/districts/house/46 in-district 0.0185
to rel area_weight
us/states/al/districts/house/54 in-district 0.0179
to rel area_weight
us/states/al/districts/house/47 in-district 0.0163
to rel area_weight
us/states/al/districts/house/52 in-district 0.0134
field source
demographics Census ACS 2023
field source
districts PostGIS area-intersection over Census TIGER 2024 boundaries
official
jurisdiction
county
al
2026-07-03

Jefferson County, AL

County jurisdiction — 5 officeholders mapped.

Demographics (ACS 2023)

Measure Value
Population 667755
Under 18 153183
1864 402504
65+ 112068
Median household income 66388
Poverty rate 15.7
Homeownership rate 63.89
Unemployment rate 4.73
Median home value 240000
Gini index 0.5084
Vacancy rate 13.16
White 323438
Black 282024
Asian 12439
Native 2099
Hispanic/Latino 36545
Bachelor's or higher 231370

Districts

Source

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