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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

4.0 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

Washington County, MN

county

27163

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
276238	66194	164071	45973	115345	5.12	81.29	3.37	422000	0.426	3.41	215812	15355	21295	689	14552	125328

to	rel	area_weight
us/states/mn/districts/08	in-district	0.3979

to	rel	area_weight
us/states/mn/districts/04	in-district	0.3888

to	rel	area_weight
us/states/mn/districts/02	in-district	0.2119

to	rel	area_weight
us/states/mn/districts/senate/33	in-district	0.4772

to	rel	area_weight
us/states/mn/districts/senate/41	in-district	0.377

to	rel	area_weight
us/states/mn/districts/senate/47	in-district	0.0841

to	rel	area_weight
us/states/mn/districts/senate/53	in-district	0.0313

to	rel	area_weight
us/states/mn/districts/senate/44	in-district	0.0291

to	rel	area_weight
us/states/mn/districts/house/33b	in-district	0.2926

to	rel	area_weight
us/states/mn/districts/house/41a	in-district	0.2647

to	rel	area_weight
us/states/mn/districts/house/33a	in-district	0.1846

to	rel	area_weight
us/states/mn/districts/house/41b	in-district	0.1123

to	rel	area_weight
us/states/mn/districts/house/47b	in-district	0.0557

to	rel	area_weight
us/states/mn/districts/house/53b	in-district	0.0313

to	rel	area_weight
us/states/mn/districts/house/44b	in-district	0.0291

to	rel	area_weight
us/states/mn/districts/house/47a	in-district	0.0285

field	source
demographics	Census ACS 2023

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

official

jurisdiction

county

2026-07-03

Washington County, MN

County jurisdiction.

Demographics (ACS 2023)

Measure	Value
Population	276238
Under 18	66194
18–64	164071
65+	45973
Median household income	115345
Poverty rate	5.12
Homeownership rate	81.29
Unemployment rate	3.37
Median home value	422000
Gini index	0.426
Vacancy rate	3.41
White	215812
Black	15355
Asian	21295
Native	689
Hispanic/Latino	14552
Bachelor's or higher	125328

Districts

MN-08 — 40% (congressional)
MN-04 — 39% (congressional)
MN-02 — 21% (congressional)
MN Senate District 33 — 48% (state senate)
MN Senate District 41 — 38% (state senate)
MN Senate District 47 — 8% (state senate)
MN Senate District 53 — 3% (state senate)
MN Senate District 44 — 3% (state senate)
MN House District 33B — 29% (state house)
MN House District 41A — 26% (state house)
MN House District 33A — 18% (state house)
MN House District 41B — 11% (state house)
MN House District 47B — 6% (state house)
MN House District 53B — 3% (state house)
MN House District 44B — 3% (state house)
MN House District 47A — 3% (state house)

Source

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

4.0 KiB Raw Blame History Unescape Escape

Washington County, MN

Demographics (ACS 2023)

Districts

Source

4.0 KiB

Raw Blame History