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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

3.4 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

Hamilton County, OH

county

39061

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
830774	190879	502140	137755	72470	14.97	59.31	5.02	241900	0.508	6.98	525380	200129	22631	1676	39995	330673

to	rel	area_weight
us/states/oh/districts/08	in-district	0.5066

to	rel	area_weight
us/states/oh/districts/01	in-district	0.4919

to	rel	area_weight
us/states/oh/districts/senate/8	in-district	0.6448

to	rel	area_weight
us/states/oh/districts/senate/9	in-district	0.2148

to	rel	area_weight
us/states/oh/districts/senate/7	in-district	0.1395

to	rel	area_weight
us/states/oh/districts/house/29	in-district	0.2948

to	rel	area_weight
us/states/oh/districts/house/27	in-district	0.1981

to	rel	area_weight
us/states/oh/districts/house/30	in-district	0.1519

to	rel	area_weight
us/states/oh/districts/house/28	in-district	0.1395

to	rel	area_weight
us/states/oh/districts/house/26	in-district	0.0782

to	rel	area_weight
us/states/oh/districts/house/25	in-district	0.0745

to	rel	area_weight
us/states/oh/districts/house/24	in-district	0.0621

field	source
demographics	Census ACS 2023

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

official

jurisdiction

county

2026-07-03

Hamilton County, OH

County jurisdiction — 9 officeholders mapped.

Demographics (ACS 2023)

Measure	Value
Population	830774
Under 18	190879
18–64	502140
65+	137755
Median household income	72470
Poverty rate	14.97
Homeownership rate	59.31
Unemployment rate	5.02
Median home value	241900
Gini index	0.508
Vacancy rate	6.98
White	525380
Black	200129
Asian	22631
Native	1676
Hispanic/Latino	39995
Bachelor's or higher	330673

Districts

OH-08 — 51% (congressional)
OH-01 — 49% (congressional)
OH Senate District 8 — 64% (state senate)
OH Senate District 9 — 21% (state senate)
OH Senate District 7 — 14% (state senate)
OH House District 29 — 29% (state house)
OH House District 27 — 20% (state house)
OH House District 30 — 15% (state house)
OH House District 28 — 14% (state house)
OH House District 26 — 8% (state house)
OH House District 25 — 7% (state house)
OH House District 24 — 6% (state house)

Source

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

3.4 KiB Raw Blame History Unescape Escape

Hamilton County, OH

Demographics (ACS 2023)

Districts

Source

3.4 KiB

Raw Blame History