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Lowest measured density of dentists in California

Q: What does “lowest measured density” mean for dentists?

A ZIP is listed only when Census published at least 5 dentists with paid employees, the ZIP has at least 10,000 residents, and a one-sided Poisson test finds the count statistically below the U.S. rate (p < 0.05). Index 100% is the national density per person present.

Q: Is a low-density ZIP a place to open this kind of business?

No. A low published count of dentists can mean weak demand, no suitable space, residents shopping near work, or businesses with no paid employees that Census ZBP does not count. Each line is a question to check locally, not a recommendation.

Q: Why is a state missing from this list?

A state page exists only when at least one ZIP in the counties we cover clears the same test as the radius search. We do not publish an empty list. Coverage is those counties, not the whole state.

California has 106 ZIP codes where published counts of dentists are statistically below the U.S. rate. Coverage is the California counties on this site, not the whole state. Same filters as the radius search. Census ZBP 2023 + ACS 2024.

Includes: General & family dentists · Orthodontists · Oral surgeons · Other dental specialists. Counted together because official statistics use one 621210 code.

Statistically low ZIPs

106

Poisson p < 0.05

Comparable ZIPs

812

published count ≥ 5, ≥ 10,000 residents

U.S. rate

3.4

per 10,000 present

Coverage. Only the California counties BizGapMap covers, not the whole state. A missing state page means no ZIP there cleared the test — we do not publish an empty list.

Lowest measured density is not evidence of opportunity. A low published count can mean weak demand, no suitable space, commuters spending elsewhere, or businesses with no paid employees that ZBP does not count. Each line is a question to check locally.

False positives. The test is one-sided at 5% with no correction for looking at many ZIPs. Of 812 comparable ZIPs here, about 41 could clear the bar by chance. Small ZIPs rarely reach significance, so “not on this list” does not mean “no gap”.

ZIP codes

ZIP	City	County	Dentists	Expected	Index	Band	ZIP type	Residents	Test
90044	Los Angeles	Los Angeles County	5	32.5	15%	Far below average	Residential	94,830	p < 0.001
94103	San Francisco	San Francisco County	5	26.3	19%	Far below average	Employment hub	34,964	p < 0.001
95206	Stockton	San Joaquin County	5	26.0	19%	Far below average	Residential	68,558	p < 0.001
95054	Santa Clara	Santa Clara County	6	25.3	24%	Far below average	Employment hub	25,704	p < 0.001
93458	Santa Maria	Santa Barbara County	5	20.7	24%	Far below average	Residential	59,148	p < 0.001
90001	Los Angeles	Los Angeles County	5	20.2	25%	Far below average	Residential	56,189	p < 0.001
93722	Fresno	Fresno County	8	31.8	25%	Far below average	Residential	86,110	p < 0.001
92057	Oceanside	San Diego County	5	19.8	25%	Far below average	Residential	56,835	p < 0.001
90011	Los Angeles	Los Angeles County	9	34.8	26%	Far below average	Residential	100,113	p < 0.001
92154	San Diego	San Diego County	8	30.9	26%	Far below average	Residential	80,445	p < 0.001
90220	Compton	Los Angeles County	5	19.3	26%	Far below average	Residential	48,354	p < 0.001
92040	Lakeside	San Diego County	5	17.1	29%	Far below average	Residential	46,216	p < 0.001
95136	San Jose	Santa Clara County	5	17.1	29%	Far below average	Residential	48,056	p < 0.001
95828	Sacramento	Sacramento County	7	23.8	29%	Far below average	Residential	61,686	p < 0.001
95307	Ceres	Stanislaus County	5	16.8	30%	Far below average	Residential	46,310	p < 0.001
90063	Los Angeles	Los Angeles County	5	16.8	30%	Far below average	Residential	48,397	p < 0.001
93313	Bakersfield	Kern County	7	23.4	30%	Far below average	Residential	61,843	p < 0.001
95843	Antelope	Sacramento County	5	16.5	30%	Far below average	Residential	47,695	p < 0.001
95833	Sacramento	Sacramento County	5	16.2	31%	Far below average	Residential	42,265	p < 0.01
92407	San Bernardino	San Bernardino County	8	25.9	31%	Far below average	Residential	71,711	p < 0.001
92027	Escondido	San Diego County	6	19.2	31%	Far below average	Residential	54,113	p < 0.001
94621	Oakland	Alameda County	5	15.8	32%	Far below average	Mixed	33,840	p < 0.01
92337	Fontana	San Bernardino County	5	15.6	32%	Far below average	Mixed	36,026	p < 0.01
91977	Spring Valley	San Diego County	7	21.7	32%	Far below average	Residential	61,064	p < 0.001
93308	Bakersfield	Kern County	8	24.0	33%	Far below average	Mixed	55,078	p < 0.001
92570	Perris	Riverside County	7	20.8	34%	Far below average	Residential	58,082	p < 0.001
92509	Jurupa Valley	Riverside County	10	29.6	34%	Far below average	Residential	81,182	p < 0.001
93727	Fresno	Fresno County	11	32.3	34%	Far below average	Residential	84,107	p < 0.001
90037	Los Angeles	Los Angeles County	8	23.0	35%	Far below average	Residential	65,482	p < 0.001
91913	Chula Vista	San Diego County	7	19.8	35%	Far below average	Residential	57,721	p < 0.001
94117	San Francisco	San Francisco County	5	14.2	35%	Far below average	Residential	36,198	p < 0.01
93535	Lancaster	Los Angeles County	10	28.0	36%	Far below average	Residential	79,409	p < 0.001
92545	Hemet	Riverside County	6	16.8	36%	Far below average	Residential	45,982	p < 0.01
90031	Los Angeles	Los Angeles County	5	13.8	36%	Far below average	Residential	36,127	p < 0.01
94134	San Francisco	San Francisco County	5	13.6	37%	Far below average	Residential	38,633	p < 0.01
90033	Los Angeles	Los Angeles County	7	18.9	37%	Far below average	Residential	45,647	p < 0.01
90007	Los Angeles	Los Angeles County	7	18.9	37%	Far below average	Mixed	38,715	p < 0.01
93705	Fresno	Fresno County	5	13.4	37%	Far below average	Residential	38,888	p < 0.01
94303	Palo Alto	Santa Clara County	7	18.7	38%	Far below average	Residential	46,879	p < 0.01
91761	Ontario	San Bernardino County	13	34.6	38%	Far below average	Mixed	62,935	p < 0.001
92571	Perris	Riverside County	9	23.7	38%	Far below average	Residential	60,096	p < 0.001
93536	Lancaster	Los Angeles County	10	26.0	38%	Far below average	Residential	73,412	p < 0.001
92203	Indio	Riverside County	5	12.9	39%	Far below average	Residential	34,735	p ≈ 0.011
94565	Pittsburg	Contra Costa County	14	35.8	39%	Far below average	Residential	100,488	p < 0.001
90805	Long Beach	Los Angeles County	13	33.2	39%	Far below average	Residential	92,402	p < 0.001
96003	Redding	Shasta County	7	17.7	40%	Far below average	Residential	44,923	p < 0.01
95205	Stockton	San Joaquin County	6	14.9	40%	Far below average	Residential	39,608	p < 0.01
93552	Palmdale	Los Angeles County	6	14.8	40%	Far below average	Residential	42,639	p < 0.01
92555	Moreno Valley	Riverside County	7	17.2	41%	Far below average	Residential	45,978	p < 0.01
90038	Los Angeles	Los Angeles County	6	14.7	41%	Far below average	Mixed	27,127	p < 0.01
90744	Wilmington	Los Angeles County	8	19.3	42%	Far below average	Residential	52,800	p < 0.01
90221	Compton	Los Angeles County	8	19.2	42%	Far below average	Residential	50,659	p < 0.01
95842	Sacramento	Sacramento County	5	12.0	42%	Far below average	Residential	34,034	p ≈ 0.020
94606	Oakland	Alameda County	6	14.3	42%	Far below average	Residential	39,966	p ≈ 0.012
92139	San Diego	San Diego County	5	11.9	42%	Far below average	Residential	34,703	p ≈ 0.022
95110	San Jose	Santa Clara County	6	14.2	42%	Far below average	Employment hub	19,963	p ≈ 0.013
90606	Whittier	Los Angeles County	5	11.7	43%	Far below average	Residential	32,057	p ≈ 0.024
95134	San Jose	Santa Clara County	8	18.6	43%	Far below average	Mixed	30,471	p < 0.01
91768	Pomona	Los Angeles County	6	13.9	43%	Far below average	Residential	34,200	p ≈ 0.015
94561	Oakley	Contra Costa County	7	16.1	43%	Far below average	Residential	46,368	p < 0.01
90291	Venice	Los Angeles County	5	11.2	45%	Far below average	Mixed	26,324	p ≈ 0.034
92336	Fontana	San Bernardino County	17	37.5	45%	Far below average	Residential	105,517	p < 0.001
90016	Los Angeles	Los Angeles County	8	17.6	45%	Far below average	Residential	46,457	p < 0.01
91342	Sylmar	Los Angeles County	16	35.1	46%	Far below average	Residential	93,301	p < 0.001
94601	Oakland	Alameda County	9	19.6	46%	Far below average	Residential	53,259	p < 0.01
91746	La Puente	Los Angeles County	6	13.0	46%	Far below average	Mixed	28,387	p ≈ 0.025
94608	Emeryville	Alameda County	8	17.3	46%	Far below average	Mixed	34,395	p ≈ 0.011
95835	Sacramento	Sacramento County	7	15.1	46%	Far below average	Residential	42,004	p ≈ 0.017
91915	Chula Vista	San Diego County	6	12.9	46%	Far below average	Residential	35,322	p ≈ 0.027
93004	Ventura	Ventura County	5	10.7	47%	Far below average	Residential	30,698	p ≈ 0.044
95621	Citrus Heights	Sacramento County	7	14.9	47%	Far below average	Residential	42,442	p ≈ 0.019
91103	Pasadena	Los Angeles County	5	10.6	47%	Far below average	Mixed	25,142	p ≈ 0.048
91352	Sun Valley	Los Angeles County	9	18.7	48%	Far below average	Residential	46,899	p ≈ 0.010
90065	Los Angeles	Los Angeles County	8	16.5	48%	Far below average	Residential	44,658	p ≈ 0.016
91306	Winnetka	Los Angeles County	8	16.5	48%	Far below average	Residential	47,176	p ≈ 0.016
92530	Lake Elsinore	Riverside County	11	22.4	49%	Far below average	Residential	61,768	p < 0.01
91010	Duarte	Los Angeles County	6	12.0	50%	Far below average	Mixed	27,589	p ≈ 0.045
92583	San Jacinto	Riverside County	6	12.0	50%	Below average	Residential	33,778	p ≈ 0.047
91343	North Hills	Los Angeles County	11	21.7	51%	Below average	Residential	60,783	p < 0.01
94107	San Francisco	San Francisco County	12	23.6	51%	Below average	Employment hub	31,823	p < 0.01
92105	San Diego	San Diego County	13	25.2	52%	Below average	Residential	71,411	p < 0.01
93305	Bakersfield	Kern County	7	13.4	52%	Below average	Residential	37,714	p ≈ 0.043
93619	Clovis	Fresno County	10	19.2	52%	Below average	Residential	55,610	p ≈ 0.017
94043	Mountain View	Santa Clara County	12	22.7	53%	Below average	Employment hub	33,176	p ≈ 0.010
93306	Bakersfield	Kern County	14	26.3	53%	Below average	Residential	74,116	p < 0.01
94089	Sunnyvale	Santa Clara County	8	15.0	53%	Below average	Mixed	22,699	p ≈ 0.038
94105	San Francisco	San Francisco County	14	26.0	54%	Below average	Employment hub	13,861	p < 0.01
95757	Elk Grove	Sacramento County	11	20.3	54%	Below average	Residential	56,764	p ≈ 0.019
92544	Hemet	Riverside County	10	17.9	56%	Below average	Residential	51,751	p ≈ 0.032
91304	Canoga Park	Los Angeles County	11	19.7	56%	Below average	Residential	52,474	p ≈ 0.025
93635	Los Banos	Merced County	10	17.9	56%	Below average	Residential	50,149	p ≈ 0.033
94063	Redwood City	San Mateo County	10	17.8	56%	Below average	Mixed	34,433	p ≈ 0.033
92223	Beaumont	Riverside County	13	23.0	57%	Below average	Residential	63,833	p ≈ 0.017
92058	Oceanside	San Diego County	10	17.6	57%	Below average	Residential	49,834	p ≈ 0.037
95131	San Jose	Santa Clara County	11	19.3	57%	Below average	Mixed	31,179	p ≈ 0.030
90023	Los Angeles	Los Angeles County	10	17.3	58%	Below average	Residential	43,857	p ≈ 0.043
93550	Palmdale	Los Angeles County	17	28.6	60%	Below average	Residential	80,645	p ≈ 0.014
92806	Anaheim	Orange County	13	21.6	60%	Below average	Mixed	41,003	p ≈ 0.033
90042	Los Angeles	Los Angeles County	12	20.0	60%	Below average	Residential	56,835	p ≈ 0.040
92880	Corona	Riverside County	17	27.8	61%	Below average	Residential	75,043	p ≈ 0.020
94112	San Francisco	San Francisco County	17	27.6	62%	Below average	Residential	79,277	p ≈ 0.021
91331	Pacoima	Los Angeles County	22	34.9	63%	Below average	Residential	97,608	p ≈ 0.013
92707	Santa Ana	Orange County	15	23.8	63%	Below average	Residential	58,695	p ≈ 0.038
90262	Lynwood	Los Angeles County	15	23.1	65%	Below average	Residential	64,235	p ≈ 0.050
93257	Porterville	Tulare County	19	29.2	65%	Below average	Residential	80,467	p ≈ 0.030
92345	Hesperia	San Bernardino County	22	31.9	69%	Below average	Residential	88,706	p ≈ 0.042

Scroll the table sideways to see all columns. Sorted by measured density, lowest first.

How this is built

Who can be listed. ZIPs in the covered counties whose county has at least 15 ZIPs in our data, with at least 10,000 residents, and at least 5 published businesses in this industry. Census hides counts of 0–2; derived remainders are excluded.

Statistically low. P(X ≤ n | expected) < 0.05, where expected is the U.S. establishments-per-person-present rate times this ZIP’s demand (residents + 0.5 × jobs located here). Same definition as the index, so the percentage and the test cannot disagree. Full test →

ZIP type is jobs per resident, not zoning. A residential ZIP can look low because residents shop near work.

Questions

What does “lowest measured density” mean for dentists? A ZIP is listed only when Census published at least 5 dentists with paid employees, the ZIP has at least 10,000 residents, and a one-sided Poisson test finds the count statistically below the U.S. rate (p < 0.05). Index 100% is the national density per person present.

Is a low-density ZIP a place to open this kind of business? No. A low published count of dentists can mean weak demand, no suitable space, residents shopping near work, or businesses with no paid employees that Census ZBP does not count. Each line is a question to check locally, not a recommendation.

Why is a state missing from this list? A state page exists only when at least one ZIP in the counties we cover clears the same test as the radius search. We do not publish an empty list. Coverage is those counties, not the whole state.

← All states for dentists · Dentists in California (county totals) · Search by radius

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BizGapMap — free, no-login small-business saturation reports for major U.S. counties. Built entirely from public U.S. Census, BLS, and IRS data (ZBP 2023, ACS 2024 5-year, PEP 2024, LODES, QCEW, IRS SOI). No forecasts, no revenue guesses — withheld cells are marked, and the few derived counts are labelled as estimates.