Files
republic-os/data/jurisdictions/us/states/md/counties/cecil/index.md
T
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

2.4 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 Cecil County, MD county 24015 MD
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
104960 23336 63699 17925 92007 10.85 75.27 5.46 343400 0.418 8.48 85715 7548 1294 100 5852 28718
to rel area_weight
us/states/md/districts/01 in-district 0.91
to rel area_weight
us/states/md/districts/senate/36 in-district 0.5415
to rel area_weight
us/states/md/districts/senate/35 in-district 0.3595
to rel area_weight
us/states/md/districts/house/36 in-district 0.5415
to rel area_weight
us/states/md/districts/house/35b in-district 0.3019
to rel area_weight
us/states/md/districts/house/35a in-district 0.0576
field source
demographics Census ACS 2023
field source
districts PostGIS area-intersection over Census TIGER 2024 boundaries
official
jurisdiction
county
md
2026-07-03

Cecil County, MD

County jurisdiction.

Demographics (ACS 2023)

Measure Value
Population 104960
Under 18 23336
1864 63699
65+ 17925
Median household income 92007
Poverty rate 10.85
Homeownership rate 75.27
Unemployment rate 5.46
Median home value 343400
Gini index 0.418
Vacancy rate 8.48
White 85715
Black 7548
Asian 1294
Native 100
Hispanic/Latino 5852
Bachelor's or higher 28718

Districts

Source

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