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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

Davis County, UT

county

49011

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
370924	111785	218231	40908	110884	6.43	77.34	2.73	505500	0.3913	4.1	310858	4470	7324	1385	43362	117940

to	rel	area_weight
us/states/ut/districts/02	in-district	0.6298

to	rel	area_weight
us/states/ut/districts/01	in-district	0.3702

to	rel	area_weight
us/states/ut/districts/senate/6	in-district	0.6709

to	rel	area_weight
us/states/ut/districts/senate/7	in-district	0.1824

to	rel	area_weight
us/states/ut/districts/senate/8	in-district	0.092

to	rel	area_weight
us/states/ut/districts/senate/5	in-district	0.0283

to	rel	area_weight
us/states/ut/districts/senate/4	in-district	0.0264

to	rel	area_weight
us/states/ut/districts/house/15	in-district	0.5797

to	rel	area_weight
us/states/ut/districts/house/18	in-district	0.1047

to	rel	area_weight
us/states/ut/districts/house/12	in-district	0.0773

to	rel	area_weight
us/states/ut/districts/house/19	in-district	0.0584

to	rel	area_weight
us/states/ut/districts/house/17	in-district	0.0516

to	rel	area_weight
us/states/ut/districts/house/16	in-district	0.0323

to	rel	area_weight
us/states/ut/districts/house/20	in-district	0.0317

to	rel	area_weight
us/states/ut/districts/house/11	in-district	0.0257

to	rel	area_weight
us/states/ut/districts/house/14	in-district	0.0199

to	rel	area_weight
us/states/ut/districts/house/13	in-district	0.0185

field	source
demographics	Census ACS 2023

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

official

jurisdiction

county

2026-07-03

Davis County, UT

County jurisdiction — 5 officeholders mapped.

Demographics (ACS 2023)

Measure	Value
Population	370924
Under 18	111785
18–64	218231
65+	40908
Median household income	110884
Poverty rate	6.43
Homeownership rate	77.34
Unemployment rate	2.73
Median home value	505500
Gini index	0.3913
Vacancy rate	4.1
White	310858
Black	4470
Asian	7324
Native	1385
Hispanic/Latino	43362
Bachelor's or higher	117940

Districts

UT-02 — 63% (congressional)
UT-01 — 37% (congressional)
UT Senate District 6 — 67% (state senate)
UT Senate District 7 — 18% (state senate)
UT Senate District 8 — 9% (state senate)
UT Senate District 5 — 3% (state senate)
UT Senate District 4 — 3% (state senate)
UT House District 15 — 58% (state house)
UT House District 18 — 10% (state house)
UT House District 12 — 8% (state house)
UT House District 19 — 6% (state house)
UT House District 17 — 5% (state house)
UT House District 16 — 3% (state house)
UT House District 20 — 3% (state house)
UT House District 11 — 3% (state house)
UT House District 14 — 2% (state house)
UT House District 13 — 2% (state house)

Source

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

4.2 KiB Raw Blame History Unescape Escape

Davis County, UT

Demographics (ACS 2023)

Districts

Source

4.2 KiB

Raw Blame History