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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

San Diego County, CA

county

06073

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
3288774	687317	2093723	507734	106268	10.28	54.57	6.11	854700	0.458	6.35	1592607	152969	406933	35126	1139063	1376225

to	rel	area_weight
us/states/ca/districts/48	in-district	0.719

to	rel	area_weight
us/states/ca/districts/49	in-district	0.0877

to	rel	area_weight
us/states/ca/districts/50	in-district	0.0601

to	rel	area_weight
us/states/ca/districts/51	in-district	0.0423

to	rel	area_weight
us/states/ca/districts/52	in-district	0.0315

to	rel	area_weight
us/states/ca/districts/senate/32	in-district	0.3437

to	rel	area_weight
us/states/ca/districts/senate/40	in-district	0.2821

to	rel	area_weight
us/states/ca/districts/senate/18	in-district	0.169

to	rel	area_weight
us/states/ca/districts/senate/38	in-district	0.103

to	rel	area_weight
us/states/ca/districts/senate/39	in-district	0.043

to	rel	area_weight
us/states/ca/districts/house/75	in-district	0.7237

to	rel	area_weight
us/states/ca/districts/house/74	in-district	0.0719

to	rel	area_weight
us/states/ca/districts/house/76	in-district	0.0471

to	rel	area_weight
us/states/ca/districts/house/77	in-district	0.0331

to	rel	area_weight
us/states/ca/districts/house/78	in-district	0.0274

to	rel	area_weight
us/states/ca/districts/house/80	in-district	0.0241

to	rel	area_weight
us/states/ca/districts/house/79	in-district	0.0134

field	source
demographics	Census ACS 2023

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

official

jurisdiction

county

2026-07-03

San Diego County, CA

County jurisdiction — 9 officeholders mapped.

Demographics (ACS 2023)

Measure	Value
Population	3288774
Under 18	687317
18–64	2093723
65+	507734
Median household income	106268
Poverty rate	10.28
Homeownership rate	54.57
Unemployment rate	6.11
Median home value	854700
Gini index	0.458
Vacancy rate	6.35
White	1592607
Black	152969
Asian	406933
Native	35126
Hispanic/Latino	1139063
Bachelor's or higher	1376225

Districts

CA-48 — 72% (congressional)
CA-49 — 9% (congressional)
CA-50 — 6% (congressional)
CA-51 — 4% (congressional)
CA-52 — 3% (congressional)
CA Senate District 32 — 34% (state senate)
CA Senate District 40 — 28% (state senate)
CA Senate District 18 — 17% (state senate)
CA Senate District 38 — 10% (state senate)
CA Senate District 39 — 4% (state senate)
CA House District 75 — 72% (state house)
CA House District 74 — 7% (state house)
CA House District 76 — 5% (state house)
CA House District 77 — 3% (state house)
CA House District 78 — 3% (state house)
CA House District 80 — 2% (state house)
CA House District 79 — 1% (state house)

Source

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

4.2 KiB Raw Blame History Unescape Escape

San Diego County, CA

Demographics (ACS 2023)

Districts

Source

4.2 KiB

Raw Blame History