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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

5.1 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

Dakota County, MN

county

27037

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
445771	106823	268161	70787	106318	5.85	74.94	3.6	381000	0.4141	2.53	331321	34647	23217	1944	38684	182532

to	rel	area_weight
us/states/mn/districts/02	in-district	0.9983

to	rel	area_weight
us/states/mn/districts/senate/58	in-district	0.5108

to	rel	area_weight
us/states/mn/districts/senate/57	in-district	0.1253

to	rel	area_weight
us/states/mn/districts/senate/52	in-district	0.0784

to	rel	area_weight
us/states/mn/districts/senate/53	in-district	0.0738

to	rel	area_weight
us/states/mn/districts/senate/56	in-district	0.0651

to	rel	area_weight
us/states/mn/districts/senate/20	in-district	0.061

to	rel	area_weight
us/states/mn/districts/senate/41	in-district	0.0482

to	rel	area_weight
us/states/mn/districts/senate/55	in-district	0.0342

to	rel	area_weight
us/states/mn/districts/house/58b	in-district	0.5083

to	rel	area_weight
us/states/mn/districts/house/57a	in-district	0.0991

to	rel	area_weight
us/states/mn/districts/house/20a	in-district	0.061

to	rel	area_weight
us/states/mn/districts/house/53a	in-district	0.0583

to	rel	area_weight
us/states/mn/districts/house/41b	in-district	0.0482

to	rel	area_weight
us/states/mn/districts/house/56b	in-district	0.0433

to	rel	area_weight
us/states/mn/districts/house/52b	in-district	0.0427

to	rel	area_weight
us/states/mn/districts/house/52a	in-district	0.0357

to	rel	area_weight
us/states/mn/districts/house/57b	in-district	0.0262

to	rel	area_weight
us/states/mn/districts/house/55b	in-district	0.0245

to	rel	area_weight
us/states/mn/districts/house/56a	in-district	0.0219

to	rel	area_weight
us/states/mn/districts/house/53b	in-district	0.0155

to	rel	area_weight
us/states/mn/districts/house/55a	in-district	0.0096

field	source
demographics	Census ACS 2023

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

official

jurisdiction

county

2026-07-03

Dakota County, MN

County jurisdiction.

Demographics (ACS 2023)

Measure	Value
Population	445771
Under 18	106823
18–64	268161
65+	70787
Median household income	106318
Poverty rate	5.85
Homeownership rate	74.94
Unemployment rate	3.6
Median home value	381000
Gini index	0.4141
Vacancy rate	2.53
White	331321
Black	34647
Asian	23217
Native	1944
Hispanic/Latino	38684
Bachelor's or higher	182532

Districts

MN-02 — 100% (congressional)
MN Senate District 58 — 51% (state senate)
MN Senate District 57 — 13% (state senate)
MN Senate District 52 — 8% (state senate)
MN Senate District 53 — 7% (state senate)
MN Senate District 56 — 7% (state senate)
MN Senate District 20 — 6% (state senate)
MN Senate District 41 — 5% (state senate)
MN Senate District 55 — 3% (state senate)
MN House District 58B — 51% (state house)
MN House District 57A — 10% (state house)
MN House District 20A — 6% (state house)
MN House District 53A — 6% (state house)
MN House District 41B — 5% (state house)
MN House District 56B — 4% (state house)
MN House District 52B — 4% (state house)
MN House District 52A — 4% (state house)
MN House District 57B — 3% (state house)
MN House District 55B — 2% (state house)
MN House District 56A — 2% (state house)
MN House District 53B — 2% (state house)
MN House District 55A — 1% (state house)

Source

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

5.1 KiB Raw Blame History Unescape Escape

Dakota County, MN

Demographics (ACS 2023)

Districts

Source

5.1 KiB

Raw Blame History