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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

3.0 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

Duval County, FL

county

12031

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
1023153	253220	367532	402401	71277	14.15	58.23	4.48	303500	0.473	8.71	521574	292981	50482	2253	126467	322765

to	rel	area_weight
us/states/fl/districts/04	in-district	0.6317

to	rel	area_weight
us/states/fl/districts/05	in-district	0.2935

to	rel	area_weight
us/states/fl/districts/senate/4	in-district	0.6525

to	rel	area_weight
us/states/fl/districts/senate/5	in-district	0.27

to	rel	area_weight
us/states/fl/districts/house/15	in-district	0.4028

to	rel	area_weight
us/states/fl/districts/house/17	in-district	0.1296

to	rel	area_weight
us/states/fl/districts/house/12	in-district	0.1109

to	rel	area_weight
us/states/fl/districts/house/13	in-district	0.105

to	rel	area_weight
us/states/fl/districts/house/14	in-district	0.0888

to	rel	area_weight
us/states/fl/districts/house/16	in-district	0.0855

field	source
demographics	Census ACS 2023

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

official

jurisdiction

county

2026-07-03

Duval County, FL

County jurisdiction — 96 officeholders mapped.

Demographics (ACS 2023)

Measure	Value
Population	1023153
Under 18	253220
18–64	367532
65+	402401
Median household income	71277
Poverty rate	14.15
Homeownership rate	58.23
Unemployment rate	4.48
Median home value	303500
Gini index	0.473
Vacancy rate	8.71
White	521574
Black	292981
Asian	50482
Native	2253
Hispanic/Latino	126467
Bachelor's or higher	322765

Districts

FL-04 — 63% (congressional)
FL-05 — 29% (congressional)
FL Senate District 4 — 65% (state senate)
FL Senate District 5 — 27% (state senate)
FL House District 15 — 40% (state house)
FL House District 17 — 13% (state house)
FL House District 12 — 11% (state house)
FL House District 13 — 10% (state house)
FL House District 14 — 9% (state house)
FL House District 16 — 9% (state house)

Source

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

3.0 KiB Raw Blame History Unescape Escape

Duval County, FL

Demographics (ACS 2023)

Districts

Source

3.0 KiB

Raw Blame History