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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

3.9 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

Jefferson County, CO

county

08059

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
579377	106970	368764	103643	110656	6.68	70.73	3.92	637600	0.4345	4.67	460410	6880	16970	4226	93302	305994

to	rel	area_weight
us/states/co/districts/07	in-district	0.9297

to	rel	area_weight
us/states/co/districts/02	in-district	0.0426

to	rel	area_weight
us/states/co/districts/06	in-district	0.0246

to	rel	area_weight
us/states/co/districts/senate/4	in-district	0.486

to	rel	area_weight
us/states/co/districts/senate/20	in-district	0.3556

to	rel	area_weight
us/states/co/districts/senate/22	in-district	0.0674

to	rel	area_weight
us/states/co/districts/senate/19	in-district	0.0656

to	rel	area_weight
us/states/co/districts/senate/16	in-district	0.0252

to	rel	area_weight
us/states/co/districts/house/25	in-district	0.6034

to	rel	area_weight
us/states/co/districts/house/27	in-district	0.2354

to	rel	area_weight
us/states/co/districts/house/23	in-district	0.0376

to	rel	area_weight
us/states/co/districts/house/28	in-district	0.0373

to	rel	area_weight
us/states/co/districts/house/24	in-district	0.0328

to	rel	area_weight
us/states/co/districts/house/29	in-district	0.0252

to	rel	area_weight
us/states/co/districts/house/30	in-district	0.0229

field	source
demographics	Census ACS 2023

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

official

jurisdiction

county

2026-07-03

Jefferson County, CO

County jurisdiction — 1 officeholders mapped.

Demographics (ACS 2023)

Measure	Value
Population	579377
Under 18	106970
18–64	368764
65+	103643
Median household income	110656
Poverty rate	6.68
Homeownership rate	70.73
Unemployment rate	3.92
Median home value	637600
Gini index	0.4345
Vacancy rate	4.67
White	460410
Black	6880
Asian	16970
Native	4226
Hispanic/Latino	93302
Bachelor's or higher	305994

Districts

CO-07 — 93% (congressional)
CO-02 — 4% (congressional)
CO-06 — 2% (congressional)
CO Senate District 4 — 49% (state senate)
CO Senate District 20 — 36% (state senate)
CO Senate District 22 — 7% (state senate)
CO Senate District 19 — 7% (state senate)
CO Senate District 16 — 3% (state senate)
CO House District 25 — 60% (state house)
CO House District 27 — 24% (state house)
CO House District 23 — 4% (state house)
CO House District 28 — 4% (state house)
CO House District 24 — 3% (state house)
CO House District 29 — 3% (state house)
CO House District 30 — 2% (state house)

Source

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

3.9 KiB Raw Blame History Unescape Escape

Jefferson County, CO

Demographics (ACS 2023)

Districts

Source

3.9 KiB

Raw Blame History