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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

4.2 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

Spartanburg County, SC

county

45083

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
347852	81285	209892	56675	66234	14.5	72.98	4.33	233300	0.4492	8.67	231820	67447	8385	660	32322	81731

to	rel	area_weight
us/states/sc/districts/04	in-district	0.7879

to	rel	area_weight
us/states/sc/districts/05	in-district	0.2097

to	rel	area_weight
us/states/sc/districts/senate/13	in-district	0.4448

to	rel	area_weight
us/states/sc/districts/senate/11	in-district	0.2191

to	rel	area_weight
us/states/sc/districts/senate/12	in-district	0.1587

to	rel	area_weight
us/states/sc/districts/senate/5	in-district	0.0968

to	rel	area_weight
us/states/sc/districts/senate/14	in-district	0.0804

to	rel	area_weight
us/states/sc/districts/house/33	in-district	0.3038

to	rel	area_weight
us/states/sc/districts/house/38	in-district	0.2023

to	rel	area_weight
us/states/sc/districts/house/35	in-district	0.1105

to	rel	area_weight
us/states/sc/districts/house/36	in-district	0.0879

to	rel	area_weight
us/states/sc/districts/house/32	in-district	0.0778

to	rel	area_weight
us/states/sc/districts/house/34	in-district	0.0755

to	rel	area_weight
us/states/sc/districts/house/37	in-district	0.0471

to	rel	area_weight
us/states/sc/districts/house/30	in-district	0.0359

to	rel	area_weight
us/states/sc/districts/house/31	in-district	0.0299

to	rel	area_weight
us/states/sc/districts/house/29	in-district	0.029

field	source
demographics	Census ACS 2023

field	source
districts	PostGIS area-intersection over Census TIGER 2024 boundaries

official

jurisdiction

county

2026-07-03

Spartanburg County, SC

County jurisdiction — 1 officeholders mapped.

Demographics (ACS 2023)

Measure	Value
Population	347852
Under 18	81285
18–64	209892
65+	56675
Median household income	66234
Poverty rate	14.5
Homeownership rate	72.98
Unemployment rate	4.33
Median home value	233300
Gini index	0.4492
Vacancy rate	8.67
White	231820
Black	67447
Asian	8385
Native	660
Hispanic/Latino	32322
Bachelor's or higher	81731

Districts

SC-04 — 79% (congressional)
SC-05 — 21% (congressional)
SC Senate District 13 — 44% (state senate)
SC Senate District 11 — 22% (state senate)
SC Senate District 12 — 16% (state senate)
SC Senate District 5 — 10% (state senate)
SC Senate District 14 — 8% (state senate)
SC House District 33 — 30% (state house)
SC House District 38 — 20% (state house)
SC House District 35 — 11% (state house)
SC House District 36 — 9% (state house)
SC House District 32 — 8% (state house)
SC House District 34 — 8% (state house)
SC House District 37 — 5% (state house)
SC House District 30 — 4% (state house)
SC House District 31 — 3% (state house)
SC House District 29 — 3% (state house)

Source

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

4.2 KiB Raw Blame History Unescape Escape

Spartanburg County, SC

Demographics (ACS 2023)

Districts

Source

4.2 KiB

Raw Blame History