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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

5.2 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

Anoka County, MN

county

27003

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
370349	87604	225516	57229	101869	7.02	80.21	4.26	346500	0.388	3.12	279414	32717	20758	2053	21612	105475

to	rel	area_weight
us/states/mn/districts/06	in-district	0.8894

to	rel	area_weight
us/states/mn/districts/03	in-district	0.0736

to	rel	area_weight
us/states/mn/districts/05	in-district	0.0368

to	rel	area_weight
us/states/mn/districts/senate/31	in-district	0.4195

to	rel	area_weight
us/states/mn/districts/senate/32	in-district	0.2289

to	rel	area_weight
us/states/mn/districts/senate/30	in-district	0.0992

to	rel	area_weight
us/states/mn/districts/senate/36	in-district	0.0841

to	rel	area_weight
us/states/mn/districts/senate/35	in-district	0.0714

to	rel	area_weight
us/states/mn/districts/senate/27	in-district	0.0549

to	rel	area_weight
us/states/mn/districts/senate/39	in-district	0.0369

to	rel	area_weight
us/states/mn/districts/senate/34	in-district	0.0051

to	rel	area_weight
us/states/mn/districts/house/31b	in-district	0.3152

to	rel	area_weight
us/states/mn/districts/house/32a	in-district	0.1754

to	rel	area_weight
us/states/mn/districts/house/31a	in-district	0.1043

to	rel	area_weight
us/states/mn/districts/house/30b	in-district	0.0992

to	rel	area_weight
us/states/mn/districts/house/36a	in-district	0.0841

to	rel	area_weight
us/states/mn/districts/house/27b	in-district	0.0549

to	rel	area_weight
us/states/mn/districts/house/32b	in-district	0.0534

to	rel	area_weight
us/states/mn/districts/house/35a	in-district	0.0361

to	rel	area_weight
us/states/mn/districts/house/35b	in-district	0.0353

to	rel	area_weight
us/states/mn/districts/house/39a	in-district	0.0307

to	rel	area_weight
us/states/mn/districts/house/39b	in-district	0.0062

to	rel	area_weight
us/states/mn/districts/house/34b	in-district	0.0051

field	source
demographics	Census ACS 2023

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

official

jurisdiction

county

2026-07-03

Anoka County, MN

County jurisdiction — 1 officeholders mapped.

Demographics (ACS 2023)

Measure	Value
Population	370349
Under 18	87604
18–64	225516
65+	57229
Median household income	101869
Poverty rate	7.02
Homeownership rate	80.21
Unemployment rate	4.26
Median home value	346500
Gini index	0.388
Vacancy rate	3.12
White	279414
Black	32717
Asian	20758
Native	2053
Hispanic/Latino	21612
Bachelor's or higher	105475

Districts

MN-06 — 89% (congressional)
MN-03 — 7% (congressional)
MN-05 — 4% (congressional)
MN Senate District 31 — 42% (state senate)
MN Senate District 32 — 23% (state senate)
MN Senate District 30 — 10% (state senate)
MN Senate District 36 — 8% (state senate)
MN Senate District 35 — 7% (state senate)
MN Senate District 27 — 5% (state senate)
MN Senate District 39 — 4% (state senate)
MN Senate District 34 — 1% (state senate)
MN House District 31B — 32% (state house)
MN House District 32A — 18% (state house)
MN House District 31A — 10% (state house)
MN House District 30B — 10% (state house)
MN House District 36A — 8% (state house)
MN House District 27B — 5% (state house)
MN House District 32B — 5% (state house)
MN House District 35A — 4% (state house)
MN House District 35B — 4% (state house)
MN House District 39A — 3% (state house)
MN House District 39B — 1% (state house)
MN House District 34B — 1% (state house)

Source

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

5.2 KiB Raw Blame History Unescape Escape

Anoka County, MN

Demographics (ACS 2023)

Districts

Source

5.2 KiB

Raw Blame History