Dental Practice Profile Coverage by U.S. County

Dental.me maps 245,109 canonical public dental practice profiles to 3,007 U.S. counties and county equivalents using the Census 2020 ZIP Code Tabulation Area relationship file. This original study measures Dental.me directory coverage by county, not dentist workforce supply or access to care.

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County-level Dental.me directory coverage

The study groups canonical practice profiles by ZIP and uses the county containing the largest share of each Census ZCTA land area. Mapping coverage and limitations are published with the results.

246,446Canonical profiles
245,109County-mapped profiles
99.5%Mapping coverage
3,007Counties represented

Direct answer: Los Angeles County in California has the largest Dental.me county assignment in this snapshot, with 10,550 canonical practice profiles. The result describes Dental.me profile coverage and should not be interpreted as an official count of dental offices or licensed dentists.

Download the complete county dataset (CSV) · Dental.me snapshot September 27, 2026 · Census relationship geography: 2020 ZCTAs.

Counties with the most Dental.me practice profiles

The table shows the first 100 county assignments. The downloadable CSV contains every represented county and county equivalent, plus Google/Maps, rating, website, hours, and mapped-ZCTA fields.

Dental.me canonical dental practice profile coverage by U.S. county and county equivalent
RankCounty or equivalentStateLargest mapped city directoryProfilesGoogle/MapsRatedWebsitesHours
1Los Angeles CountyCaliforniaLos Angeles10,5507,2675,5944,1474,908
2Cook CountyIllinoisChicago4,6902,8632,2681,9311,960
3Orange CountyCaliforniaIrvine4,4973,3422,5482,0912,335
4Maricopa CountyArizonaPhoenix3,5912,4421,9121,8981,788
5Harris CountyTexasHouston3,3352,0391,7741,5151,605
6San Diego CountyCaliforniaSan Diego3,0872,0351,6601,4661,526
7New York CountyNew YorkNew York2,5011,3011,1171,0151,027
8King CountyWashingtonSeattle2,4851,7821,3701,3861,295
9Santa Clara CountyCaliforniaSan Jose2,3241,7571,3861,1461,294
10Queens CountyNew YorkFlushing2,1911,4831,119680904
11Dallas CountyTexasDallas2,0951,128956878908
12Nassau CountyNew YorkGreat Neck1,9091,4671,078858896
13Kings CountyNew YorkBrooklyn1,779890743529611
14San Bernardino CountyCaliforniaRancho Cucamonga1,7681,177929712843
15Miami-Dade CountyFloridaMiami1,759972895672810
16Riverside CountyCaliforniaRiverside1,6771,217929725850
17Alameda CountyCaliforniaOakland1,6671,263946770835
18Clark CountyNevadaLas Vegas1,6261,064873790794
19Tarrant CountyTexasFort Worth1,6121,142941866879
20Middlesex CountyMassachusettsCambridge1,5871,063861836799
21Montgomery CountyMarylandRockville1,5481,195843752711
22Oakland CountyMichiganSouthfield1,488996733649645
23Fairfax CountyVirginiaFairfax1,4821,065875813788
24Bergen CountyNew JerseyFort Lee1,4761,121842676708
25Bexar CountyTexasSan Antonio1,454868740658662
26Sacramento CountyCaliforniaSacramento1,4031,112792657711
27Suffolk CountyNew YorkHuntington1,325949692564568
28Westchester CountyNew YorkWhite Plains1,3101,037704591602
29Allegheny CountyPennsylvaniaPittsburgh1,296960607481468
30DuPage CountyIllinoisNaperville1,263908699632612
31Broward CountyFloridaFt Lauderdale1,247713666574600
32Collin CountyTexasPlano1,237815716699673
33Wayne CountyMichiganDetroit1,220777590480501
34Contra Costa CountyCaliforniaWalnut Creek1,166902688628618
35Salt Lake CountyUtahSalt Lake City1,141817628574549
36Travis CountyTexasAustin1,140769608592577
37Cuyahoga CountyOhioCleveland1,109787564492461
38Hennepin CountyMinnesotaMinneapolis1,091738498540464
39Fulton CountyGeorgiaAtlanta1,085760584560534
40Philadelphia CountyPennsylvaniaPhiladelphia1,075649469352370
41Fairfield CountyConnecticutStamford1,074836591513520
42Franklin CountyOhioColumbus1,055751544532488
43Suffolk CountyMassachusettsBoston1,042544355370293
44San Francisco CountyCaliforniaSan Francisco1,032694552467497
45Wake CountyNorth CarolinaRaleigh1,014711570557524
46Honolulu CountyHawaiiHonolulu958767479362395
47Palm Beach CountyFloridaBoca Raton944536495438455
48Ventura CountyCaliforniaOxnard936737538455481
49Montgomery CountyPennsylvaniaLansdale928660458402408
50St. Louis CountyMissouriSt. Louis909715515433429
51Hartford CountyConnecticutWest Hartford890692492433442
52Oklahoma CountyOklahomaOklahoma City883629443448380
53Middlesex CountyNew JerseyEdison863556432372366
54San Mateo CountyCaliforniaSan Mateo853688508401441
55District of Columbia CountyDistrict of ColumbiaWashington850632412357351
56Macomb CountyMichiganSterling Heights813570475382398
57Norfolk CountyMassachusettsQuincy812523426417407
58Marion CountyIndianaIndianapolis802567411384358
59Essex CountyNew JerseyNewark801583404327345
60Erie CountyNew YorkBuffalo783563375294316
61New Haven CountyConnecticutNew Haven769603399342328
62Bronx CountyNew YorkBronx769489296212223
63Hillsborough CountyFloridaTampa767485447416418
64Mecklenburg CountyNorth CarolinaCharlotte765321291285274
65Jefferson CountyKentuckyLouisville761561382323326
66Monmouth CountyNew JerseyFreehold756534401358341
67Gwinnett CountyGeorgiaLawrenceville738525401360351
68Essex CountyMassachusettsLynn738536415380370
69Shelby CountyTennesseeMemphis735575387288335
70Fresno CountyCaliforniaFresno726517403306347
71Denver CountyColoradoDenver722485370352335
72Fort Bend CountyTexasSugar Land714430386364349
73Multnomah CountyOregonPortland711515346329317
74Denton CountyTexasCarrollton710481410393388
75Lake CountyIllinoisBuffalo Grove709506384342330
76Milwaukee CountyWisconsinMilwaukee708485351340303
77Snohomish CountyWashingtonEverett705519405413386
78Baltimore CountyMarylandBaltimore699543388327341
79Pima CountyArizonaTucson693509379335321
80Davidson CountyTennesseeNashville677497338316308
81Worcester CountyMassachusettsWorcester653478372348336
82Pierce CountyWashingtonTacoma653467369347336
83Morris CountyNew JerseyMorristown651492372326322
84El Paso CountyColoradoColorado Springs650433342330313
85Prince George's CountyMarylandBowie650473332271261
86Bucks CountyPennsylvaniaDoylestown650478351307299
87Johnson CountyKansasOverland Park646496371357327
88Cobb CountyGeorgiaMarietta634483377366340
89Hamilton CountyOhioCincinnati624454360281285
90Monroe CountyNew YorkRochester623473320315287
91Bernalillo CountyNew MexicoAlbuquerque607439293272268
92Arapahoe CountyColoradoAurora601435340327317
93Jackson CountyMissouriKansas City600435302273269
94Hudson CountyNew JerseyJersey City594401323240281
95Orange CountyFloridaOrlando590369340300308
96Tulsa CountyOklahomaTulsa576414325297286
97DeKalb CountyGeorgiaAtlanta575423308256264
98Jefferson CountyColoradoLakewood562419333308302
99El Paso CountyTexasEl Paso552390232190199
100Jefferson CountyAlabamaBirmingham550369261224234

How county assignment works

Dental.me numerator: canonical public profiles with an indexation status of indexable or indexable_basic. Archived, duplicate, draft, and unsafe records are excluded.

Geographic method: profiles are grouped by five-digit ZIP. The U.S. Census Bureau 2020 ZCTA-to-county relationship file can associate one ZCTA with multiple counties, so Dental.me assigns that ZIP to the county containing the largest share of the ZCTA land area. Water area provides only a deterministic tie-breaker. The largest mapped city directory is the indexable Dental.me city with the most canonical profiles assigned to that county by the same ZIP method; it is a navigation aid, not a claim that the city represents the entire county.

Coverage: 245,109 of 246,446 canonical profiles (99.46%) mapped to a same-state Census ZCTA and county. 1,337 profiles lacked a usable same-state mapping and are not assigned in the county table.

Limitation: ZIP-based county assignment is an approximation for ZIPs that cross county boundaries. Counts measure Dental.me directory coverage. They do not establish the official number of dental offices, licensed dentists, appointment capacity, affordability, insurance participation, travel time, or access to care.

Source: U.S. Census Bureau geographic relationship files.

Related research: Practice profiles per capita by state · Top U.S. cities by practice profiles · Contact-data coverage.

Frequently asked questions

Which county has the most Dental.me dental practice profiles?

Los Angeles County in California has 10,550 canonical Dental.me practice profiles in this snapshot.

Does this dataset count licensed dentists by county?

No. It counts canonical Dental.me dental practice profiles assigned to counties by ZIP. One practice profile can have one or more providers, and this is not a licensing census.

How does Dental.me assign a ZIP that crosses county lines?

Dental.me assigns the ZIP to the county containing the largest share of that Census 2020 ZCTA land area. The CSV labels this dominant-county method, and the page publishes its limitations.

Why are some Dental.me practice profiles not mapped to a county?

A profile is left out of the county table when its ZIP is missing, malformed, absent from the Census ZCTA relationship file, or maps to a different state than the profile.

Does a higher profile count mean better access to dental care?

No. The count measures Dental.me directory coverage. It does not measure provider supply, appointment capacity, affordability, insurance participation, or travel time.

How to cite this Dental.me data

Suggested citation: Dental.me. Dental Practice Profile Coverage by U.S. County. Updated September 27, 2026. https://dental.me/dental-market-data/dental-practice-profiles-by-county/.

Download Dental.me dental practice profile coverage by county dataset (CSV).

Source basis: Dental.me combines CMS NPPES data files and the NPI Registry with provider taxonomy, business-profile enrichment, practice websites, owner-submitted updates, correction requests, and Dental.me review workflows.

For aggregate-data questions or a custom state or city breakdown, contact support@dental.me.

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