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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

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

DeKalb County, GA

county

13089

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
765351	174042	486033	105276	80644	13.69	58.79	6.39	357800	0.4965	13.18	221151	388444	47355	3647	80839	360465

to	rel	area_weight
us/states/ga/districts/04	in-district	0.7188

to	rel	area_weight
us/states/ga/districts/05	in-district	0.2404

to	rel	area_weight
us/states/ga/districts/13	in-district	0.0405

to	rel	area_weight
us/states/ga/districts/senate/10	in-district	0.2294

to	rel	area_weight
us/states/ga/districts/senate/55	in-district	0.21

to	rel	area_weight
us/states/ga/districts/senate/41	in-district	0.1897

to	rel	area_weight
us/states/ga/districts/senate/44	in-district	0.1605

to	rel	area_weight
us/states/ga/districts/senate/40	in-district	0.1596

to	rel	area_weight
us/states/ga/districts/senate/43	in-district	0.0506

to	rel	area_weight
us/states/ga/districts/house/88	in-district	0.0941

to	rel	area_weight
us/states/ga/districts/house/90	in-district	0.088

to	rel	area_weight
us/states/ga/districts/house/91	in-district	0.0843

to	rel	area_weight
us/states/ga/districts/house/87	in-district	0.0699

to	rel	area_weight
us/states/ga/districts/house/89	in-district	0.0654

to	rel	area_weight
us/states/ga/districts/house/80	in-district	0.0646

to	rel	area_weight
us/states/ga/districts/house/84	in-district	0.0624

to	rel	area_weight
us/states/ga/districts/house/115	in-district	0.0611

to	rel	area_weight
us/states/ga/districts/house/85	in-district	0.0606

to	rel	area_weight
us/states/ga/districts/house/101	in-district	0.0568

to	rel	area_weight
us/states/ga/districts/house/86	in-district	0.0568

to	rel	area_weight
us/states/ga/districts/house/95	in-district	0.0493

to	rel	area_weight
us/states/ga/districts/house/83	in-district	0.0449

to	rel	area_weight
us/states/ga/districts/house/94	in-district	0.0441

to	rel	area_weight
us/states/ga/districts/house/116	in-district	0.0433

to	rel	area_weight
us/states/ga/districts/house/52	in-district	0.0274

to	rel	area_weight
us/states/ga/districts/house/93	in-district	0.0267

field	source
demographics	Census ACS 2023

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

official

jurisdiction

county

2026-07-03

DeKalb County, GA

County jurisdiction — 5 officeholders mapped.

Demographics (ACS 2023)

Measure	Value
Population	765351
Under 18	174042
18–64	486033
65+	105276
Median household income	80644
Poverty rate	13.69
Homeownership rate	58.79
Unemployment rate	6.39
Median home value	357800
Gini index	0.4965
Vacancy rate	13.18
White	221151
Black	388444
Asian	47355
Native	3647
Hispanic/Latino	80839
Bachelor's or higher	360465

Districts

GA-04 — 72% (congressional)
GA-05 — 24% (congressional)
GA-13 — 4% (congressional)
GA Senate District 10 — 23% (state senate)
GA Senate District 55 — 21% (state senate)
GA Senate District 41 — 19% (state senate)
GA Senate District 44 — 16% (state senate)
GA Senate District 40 — 16% (state senate)
GA Senate District 43 — 5% (state senate)
GA House District 88 — 9% (state house)
GA House District 90 — 9% (state house)
GA House District 91 — 8% (state house)
GA House District 87 — 7% (state house)
GA House District 89 — 7% (state house)
GA House District 80 — 6% (state house)
GA House District 84 — 6% (state house)
GA House District 115 — 6% (state house)
GA House District 85 — 6% (state house)
GA House District 101 — 6% (state house)
GA House District 86 — 6% (state house)
GA House District 95 — 5% (state house)
GA House District 83 — 4% (state house)
GA House District 94 — 4% (state house)
GA House District 116 — 4% (state house)
GA House District 52 — 3% (state house)
GA House District 93 — 3% (state house)

Source

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

5.7 KiB Raw Blame History Unescape Escape

DeKalb County, GA

Demographics (ACS 2023)

Districts

Source

5.7 KiB

Raw Blame History