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Physical therapy in California

How many physical therapy exist per person present (residents + daytime workers) across the 35 California counties we cover, by ZIP code, compared with the U.S. average. Data: Census ZBP 2023 + ACS 2024 + BLS QCEW.

Includes: Physical therapy clinics · Occupational therapy offices · Speech therapy offices · Audiology offices. Counted together because official statistics use one 621340 code.

State verdict (covered counties): Below the U.S. rate — 82% of the U.S. rate

Counties covered

in California

Physical therapy

4,850

establishments (2023)

Per 10,000 present

1.1

residents + 0.5×workers

U.S. average

1.3

per 10,000 present

State index

82%

vs. U.S.

Residents

38,319,676

in covered counties

Workers

15,030,202

jobs in covered counties

Coverage. This page aggregates only the 35 California counties BizGapMap covers — not the whole state. Counts and the index reflect those counties. The aggregate index uses only ZIP cells Census published, so it is a lower bound. Density is a supply-side signal: it counts existing physical therapy and the people present, not foot traffic, income, rent, or whether locals want more.

Counties in California

City	County	Physical therapy	Residents	Workers	Per 10k	Index	Verdict
Irvine	Orange County	625–761	3,175,270	1,572,620	1.6	123–131%	Above average
Ventura	Ventura County	142–196	841,297	285,173	1.4	112–131%	Above average
Redding	Shasta County	31–81	190,130	53,985	1.4	111–261%	Range spans bands
Santa Cruz	Santa Cruz County	44–74	272,278	80,401	1.4	110–159%	Range spans bands
San Diego	San Diego County	556–764	3,282,423	1,385,217	1.4	109–128%	Above average
San Luis Obispo	San Luis Obispo County	43–91	271,285	97,546	1.3	104–173%	Range spans bands
El Segundo	Los Angeles County	1,519–1,973	9,801,306	3,924,098	1.3	100–114%	Above average
San Francisco	San Francisco County	146–184	830,479	727,248	1.2	95–106%	Range spans bands
San Rafael	Marin County	37–97	257,061	106,330	1.2	93–198%	Range spans bands
Roseville	Placer County	59–101	422,233	166,507	1.2	91–155%	Range spans bands
El Dorado Hills	El Dorado County	25–67	192,693	49,889	1.1	89–211%	Range spans bands
Monterey	Monterey County	50–110	426,948	115,284	1.0	80–164%	Range spans bands
Chico	Butte County	24–56	207,286	61,889	1.0	78–163%	Range spans bands
Goleta	Santa Barbara County	51–105	443,781	158,550	1.0	76–117%	Range spans bands
Santa Rosa	Sonoma County	55–117	485,213	174,040	1.0	75–135%	Range spans bands
Menlo Park	San Mateo County	89–133	713,109	457,352	0.9	73–98%	Below average
Concord	Contra Costa County	123–187	1,159,422	342,009	0.9	72–100%	Below average
Santa Clara	Santa Clara County	227–347	1,935,981	1,162,159	0.9	70–87%	Below average
West Sacramento	Yolo County	20–52	222,458	74,293	0.8	60–144%	Range spans bands
Fairfield	Solano County	39–57	449,663	122,066	0.8	59–84%	Range spans bands
Fremont	Alameda County	154–220	1,655,008	750,285	0.8	59–77%	Range spans bands
Fresno	Fresno County	87–201	1,021,317	301,306	0.7	58–119%	Range spans bands
Riverside	Riverside County	204–328	2,482,806	674,999	0.7	56–76%	Range spans bands
Napa	Napa County	12–32	135,313	65,776	0.7	55–129%	Range spans bands
Folsom	Sacramento County	125–219	1,596,140	531,159	0.7	52–81%	Range spans bands
Ontario	San Bernardino County	163–331	2,195,107	711,262	0.6	50–88%	Range spans bands
Modesto	Stanislaus County	37–77	559,023	148,684	0.6	45–87%	Range spans bands
Merced	Merced County	18–50	288,279	48,681	0.6	45–119%	Range spans bands
Eureka	Humboldt County	8–70	134,385	33,944	0.5	41–339%	Range spans bands
Tracy	San Joaquin County	47–111	796,477	232,266	0.5	40–83%	Range spans bands
Hanford	Kings County	8–22	152,269	28,375	0.5	37–93%	Range spans bands
Bakersfield	Kern County	49–143	915,763	218,146	0.5	37–90%	Range spans bands
Visalia	Tulare County	25–87	473,757	104,822	0.5	37–114%	Range spans bands
El Centro	Imperial County	5–33	174,015	33,702	0.3	20–126%	Range spans bands
Madera	Madera County	3–27	159,701	30,139	0.2	13–111%	Range spans bands

Scroll the table sideways to see all columns.

Lowest vs. highest measured density

Fewest competitors per capita

123%

112%

111%

110%

109%

104%

100%

95%

Most competitors per capita

13%

20%

37%

37%

37%

40%

41%

45%

Low measured density is not evidence of opportunity. A county with few physical therapy may simply lack foot traffic, retail space, or demand. Use the ranking to find where to look, then verify locally.

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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.