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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

3.2 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

Lafayette County, MS

county

28071

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
58327	10537	39809	7981	67185	18.54	63.77	2.11	315400	0.5232	33.68	40594	13220	1317	58	2151	23509

to	rel	area_weight
us/states/ms/districts/01	in-district	0.9996

to	rel	area_weight
us/states/ms/districts/senate/9	in-district	0.6079

to	rel	area_weight
us/states/ms/districts/senate/10	in-district	0.2019

to	rel	area_weight
us/states/ms/districts/senate/8	in-district	0.1902

to	rel	area_weight
us/states/ms/districts/house/13	in-district	0.3001

to	rel	area_weight
us/states/ms/districts/house/23	in-district	0.2535

to	rel	area_weight
us/states/ms/districts/house/10	in-district	0.187

to	rel	area_weight
us/states/ms/districts/house/34	in-district	0.0757

to	rel	area_weight
us/states/ms/districts/house/12	in-district	0.0727

to	rel	area_weight
us/states/ms/districts/house/8	in-district	0.0644

to	rel	area_weight
us/states/ms/districts/house/5	in-district	0.0465

field	source
demographics	Census ACS 2023

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

official

jurisdiction

county

2026-07-03

Lafayette County, MS

County jurisdiction — 1 officeholders mapped.

Demographics (ACS 2023)

Measure	Value
Population	58327
Under 18	10537
18–64	39809
65+	7981
Median household income	67185
Poverty rate	18.54
Homeownership rate	63.77
Unemployment rate	2.11
Median home value	315400
Gini index	0.5232
Vacancy rate	33.68
White	40594
Black	13220
Asian	1317
Native	58
Hispanic/Latino	2151
Bachelor's or higher	23509

Districts

MS-01 — 100% (congressional)
MS Senate District 9 — 61% (state senate)
MS Senate District 10 — 20% (state senate)
MS Senate District 8 — 19% (state senate)
MS House District 13 — 30% (state house)
MS House District 23 — 25% (state house)
MS House District 10 — 19% (state house)
MS House District 34 — 8% (state house)
MS House District 12 — 7% (state house)
MS House District 8 — 6% (state house)
MS House District 5 — 5% (state house)

Source

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

3.2 KiB Raw Blame History Unescape Escape

Lafayette County, MS

Demographics (ACS 2023)

Districts

Source

3.2 KiB

Raw Blame History