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Sources

Every fact on this site links to the official page it comes from, in a numbered source list at the bottom of the page. This page summarises those sources by state.

On this page
  1. What counts as a source
  2. State guides
  3. County guides
  4. National guides
  5. Geography and population

What counts as a source

We cite county and state government websites, state statutes and court rules, official fee schedules, official state directories of county offices, and the US Census Bureau for county lists and populations. Vendor portals appear only when the office links to them. We never cite data brokers, people-search sites or other record directories. How we check explains the two-step verification.

State guides

StateOfficial pages citedMain websitesLast checked
Alabama53alison.legislature.state.al.us, sos.alabama.gov, alabamapublichealth.gov, revenue.alabama.govNovember 4, 2026
Alaska48akleg.gov, dnr.alaska.gov, courts.alaska.gov, health.alaska.govNovember 4, 2026
Arizona47azleg.gov, azdhs.gov, azoca.gov, azcourts.govNovember 4, 2026
Arkansas36healthy.arkansas.gov, pulaskiclerkar.gov, arcourts.gov, sos.arkansas.govNovember 4, 2026
California44leginfo.legislature.ca.gov, cdph.ca.gov, sos.ca.gov, oag.ca.govNovember 4, 2026
Colorado51coloradosos.gov, coloradojudicial.gov, clerkandrecorder.elpasoco.com, archives.colorado.govNovember 4, 2026
Connecticut55portal.ct.gov, cga.ct.gov, libguides.ctstatelibrary.org, ctprobate.govNovember 4, 2026
Delaware36delcode.delaware.gov, courts.delaware.gov, kentcountyde.gov, sussexcountyde.govNovember 4, 2026
District of Columbia52dccourts.gov, otr.cfo.dc.gov, code.dccouncil.gov, dlcp.dc.govNovember 4, 2026
Florida33leg.state.fl.us, web.archive.org, floridahealth.gov, floridarevenue.comNovember 4, 2026
Georgia53georgia.gov, gsccca.org, dph.georgia.gov, dor.georgia.govNovember 4, 2026
Hawaii45courts.state.hi.us, dlnr.hawaii.gov, health.hawaii.gov, ags.hawaii.govNovember 4, 2026
Idaho43legislature.idaho.gov, healthandwelfare.idaho.gov, sos.idaho.gov, isc.idaho.govNovember 4, 2026
Illinois42dph.illinois.gov, cookcountyclerkil.gov, illinoisattorneygeneral.gov, tax.illinois.govNovember 4, 2026
Indiana46in.gov, inbiz.in.gov, faqs.in.gov, hamiltoncounty.in.govNovember 4, 2026
Iowa40legis.iowa.gov, sos.iowa.gov, iowacourts.gov, hhs.iowa.govNovember 4, 2026
Kansas40ksrevisor.gov, kdhe.ks.gov, sos.ks.gov, jocogov.orgNovember 4, 2026
Kentucky68apps.legislature.ky.gov, kycourts.gov, chfs.ky.gov, sos.ky.govNovember 4, 2026
Louisiana63legis.la.gov, sos.la.gov, ldh.la.gov, lsp.orgNovember 4, 2026
Maine66maine.gov, legislature.maine.gov, courts.maine.gov, maineregistryofdeeds.comNovember 4, 2026
Maryland53mgaleg.maryland.gov, health.maryland.gov, mdcourts.gov, dpscs.maryland.govNovember 4, 2026
Massachusetts58mass.gov, malegislature.gov, sec.state.ma.us, boston.govNovember 4, 2026
Michigan65legislature.mi.gov, michigan.gov, courts.michigan.gov, mspsor.comNovember 4, 2026
Minnesota76revisor.mn.gov, sos.mn.gov, health.state.mn.us, mn.govNovember 4, 2026
Mississippi40sos.ms.gov, courts.ms.gov, msdh.ms.gov, ethics.ms.govNovember 4, 2026
Missouri39revisor.mo.gov, sos.mo.gov, health.mo.gov, stc.mo.govNovember 4, 2026
Montana60mca.legmt.gov, sosmt.gov, dphhs.mt.gov, revenue.mt.govNovember 4, 2026
Nebraska34nebraskajudicial.gov, sos.nebraska.gov, nebraskalegislature.gov, ago.nebraska.govNovember 4, 2026
Nevada40leg.state.nv.us, clarkcountynv.gov, nsla.nv.gov, rccd.nv.govNovember 4, 2026
New Hampshire46gc.nh.gov, courts.nh.gov, sos.nh.gov, nhdeeds.orgNovember 4, 2026
New Jersey54nj.gov, ucnj.org, camdencounty.com, burlingtoncountynj.govNovember 4, 2026
New Mexico47nmonesource.com, sos.nm.gov, srca.nm.gov, tax.newmexico.govNovember 4, 2026
New York36nysenate.gov, nyc.gov, health.ny.gov, nycourts.govNovember 4, 2026
North Carolina46ncleg.gov, vitalrecords.nc.gov, nccourts.gov, ncsbi.govNovember 4, 2026
North Dakota49ndlegis.gov, sos.nd.gov, attorneygeneral.nd.gov, hhs.nd.govNovember 4, 2026
Ohio44codes.ohio.gov, ohioattorneygeneral.gov, fiscaloffice.summitoh.net, supremecourt.ohio.govNovember 4, 2026
Oklahoma40oklahoma.gov, oklegislature.gov, sos.ok.gov, countyclerk.tulsacounty.orgNovember 4, 2026
Oregon39oregon.gov, oregonlegislature.gov, sos.oregon.gov, courts.oregon.govNovember 4, 2026
Pennsylvania42pa.gov, palegis.us, pacourts.us, epatch.pa.govNovember 4, 2026
Rhode Island55webserver.rilegislature.gov, sos.ri.gov, courts.ri.gov, health.ri.govNovember 4, 2026
South Carolina61scstatehouse.gov, sccourts.org, dph.sc.gov, scdah.sc.govNovember 4, 2026
South Dakota54sdlegislature.gov, doh.sd.gov, dor.sd.gov, ujs.sd.govNovember 4, 2026
Tennessee58ctas.tennessee.edu, comptroller.tn.gov, sos.tn.gov, nashville.govNovember 4, 2026
Texas48statutes.capitol.texas.gov, dshs.texas.gov, texasattorneygeneral.gov, comptroller.texas.govNovember 4, 2026
Utah48le.utah.gov, utcourts.gov, vitalrecords.utah.gov, saltlakecounty.govNovember 4, 2026
Vermont47sos.vermont.gov, legislature.vermont.gov, vtcourts.gov, healthvermont.govNovember 4, 2026
Virginia58law.lis.virginia.gov, vacourts.gov, vdh.virginia.gov, vsp.virginia.govNovember 4, 2026
Washington45app.leg.wa.gov, courts.wa.gov, doh.wa.gov, sos.wa.govNovember 4, 2026
West Virginia42code.wvlegislature.gov, sos.wv.gov, dhhr.wv.gov, tax.wv.govNovember 4, 2026
Wisconsin37docs.legis.wisconsin.gov, dhs.wisconsin.gov, revenue.wi.gov, wisdoj.govNovember 4, 2026
Wyoming37wyoleg.gov, sos.wyo.gov, wyocourts.gov, wyoarchives.wyo.govNovember 4, 2026

County guides

National guides

Besides the state records, the national guides quote these official pages:

Geography and population