Health by ZIP

San Mateo County, CA health estimates

California. 726,353 residents, 587,135 adults (the Census population estimates that PLACES uses). 29 ZIP Codes and 31 places with estimates.

Compare with another placeZIP Codes of the county (CSV)

San Mateo County in California. Boundaries: US Census Bureau.

The figures are model-based estimates for the adults of an area. They are not measurements. They say nothing about one person.

We do not produce estimates for individuals; only aggregated results for counties, places, census tracts, or ZCTAs.

First, it is not adequate to simply compare point estimates. The confidence intervals should also be considered, and some are very broad.

Centers for Disease Control and Prevention, PLACES Frequently Asked Questions (page dated 11 Dec 2025, read on 2 Oct 2026)

PLACES 2025 release. Survey years (BRFSS): 2022 and 2023. CDC updated the data on . What an estimate is. How to read an interval. The site gives no medical advice.

CDC estimates that 22.3% of the adults of San Mateo County, CA have obesity.

The 95% confidence interval is 17.9% to 27.1%.

PLACES 2025, BRFSS 2023.

Report card: 40 measures by CDC category

Crude prevalence is the estimated share of all adults. Age-adjusted prevalence uses the 2000 US standard population, so that areas with different ages can be compared. CDC: Age-adjusted estimates are only available at the county and place-level.

"Higher" or "lower": the two 95% confidence intervals do not overlap. "Similar": they overlap. Against the state figure, which has no interval, the words are "above", "below" and "in line".

Health outcomes: San Mateo County, CA
MeasureEstimate and interval on a scale of 0 to 50%Estimate95% intervalCA figure (site aggregate)United States
All teeth lost among adults aged ≥65 yearsBRFSS 20227.6%6.1 to 9.410.6%below12.2%lowerinterval 11.8 to 12.67.8%6.2 to 9.510.8%below12.6%lowerinterval 12.2 to 13.0
Arthritis among adultsBRFSS 202320.2%17.7 to 22.720.8%in line25.4%lowerinterval 25.1 to 25.617.1%15.0 to 19.419.0%in line21.9%lowerinterval 21.6 to 22.1
Cancer (non-skin) or melanoma among adultsBRFSS 20236.8%6.2 to 7.56.4%in line7.9%lowerinterval 7.8 to 8.15.6%5.1 to 6.25.7%in line6.6%lowerinterval 6.4 to 6.7
Chronic obstructive pulmonary disease among adultsBRFSS 20234.0%3.4 to 4.85.1%below6.2%lowerinterval 6.1 to 6.33.5%2.9 to 4.14.6%below5.3%lowerinterval 5.2 to 5.4
Coronary heart disease among adultsBRFSS 20235.2%4.6 to 5.85.6%in line6.4%lowerinterval 6.2 to 6.54.2%3.7 to 4.85.0%below5.3%lowerinterval 5.2 to 5.4
Current asthma among adultsBRFSS 20238.5%7.5 to 9.59.3%in line9.8%lowerinterval 9.6 to 10.08.5%7.5 to 9.69.3%in line9.8%similar
Depression among adultsBRFSS 202318.1%15.5 to 20.920.1%in line20.2%similar18.7%16.0 to 21.620.4%in line20.7%similar
Diagnosed diabetes among adultsBRFSS 202310.6%9.2 to 12.111.7%in line12.0%similar9.0%7.8 to 10.410.7%below10.3%similar
High blood pressure among adultsBRFSS 202329.2%26.0 to 32.630.5%in line34.4%lowerinterval 34.0 to 34.725.7%22.8 to 28.928.5%in line30.7%lowerinterval 30.4 to 31.0
High cholesterol among adults who have ever been screenedBRFSS 202337.4%33.6 to 41.235.4%in line37.4%similar32.7%29.1 to 36.531.9%in line32.2%similar
Obesity among adultsBRFSS 202322.3%17.9 to 27.127.8%below32.8%lowerinterval 32.4 to 33.122.0%17.7 to 26.827.9%below32.9%lowerinterval 32.5 to 33.2
Stroke among adultsBRFSS 20232.7%2.4 to 3.03.1%below3.4%lowerinterval 3.3 to 3.52.3%2.0 to 2.52.9%below2.9%lowerinterval 2.8 to 3.0
Prevention: San Mateo County, CA
MeasureEstimate and interval on a scale of 0 to 100%Estimate95% intervalCA figure (site aggregate)United States
Cholesterol screening among adultsBRFSS 202388.2%86.5 to 89.885.4%above87.5%similar86.5%84.4 to 88.384.5%in line85.6%similar
Colorectal cancer screening among adults aged 45–75 yearsBRFSS 202263.9%59.4 to 68.357.5%above66.3%similar59.4%54.8 to 63.953.5%above54.1%higherinterval 53.7 to 54.6
Current lack of health insurance among adults aged 18-64 yearsBRFSS 20236.6%5.1 to 8.310.6%below11.0%lowerinterval 10.7 to 11.36.9%5.3 to 8.610.7%below11.5%lowerinterval 11.2 to 11.9
Mammography use among women aged 50-74 yearsBRFSS 202279.3%72.7 to 85.075.7%in line76.5%similar79.1%72.5 to 84.875.3%in line76.0%similar
Taking medicine to control high blood pressure among adults with high blood pressureBRFSS 202373.1%69.8 to 76.271.3%in line77.0%lowerinterval 76.5 to 77.551.8%47.6 to 56.252.2%in line57.5%lowerinterval 56.8 to 58.2
Visited dentist or dental clinic in the past year among adultsBRFSS 202268.2%65.0 to 71.362.8%above63.9%higherinterval 63.6 to 64.267.8%64.6 to 71.062.6%above63.4%higherinterval 63.1 to 63.7
Visits to doctor for routine checkup within the past year among adultsBRFSS 202371.6%67.9 to 75.171.9%in line77.7%lowerinterval 77.4 to 78.069.2%65.3 to 72.970.6%in line75.7%lowerinterval 75.4 to 76.0
Health risk behaviors: San Mateo County, CA
MeasureEstimate and interval on a scale of 0 to 40%Estimate95% intervalCA figure (site aggregate)United States
Binge drinking among adultsBRFSS 202314.6%12.3 to 17.215.3%in line15.2%similar16.0%13.4 to 18.816.2%in line16.6%similar
Current cigarette smoking among adultsBRFSS 20238.0%6.5 to 9.810.9%below11.4%lowerinterval 11.2 to 11.68.0%6.5 to 9.811.0%below11.6%lowerinterval 11.4 to 11.9
No leisure-time physical activity among adultsBRFSS 202320.2%16.9 to 24.224.6%below24.5%similar19.3%16.1 to 23.124.2%below23.7%lowerinterval 23.4 to 24.0
Short sleep duration among adultsBRFSS 202228.3%23.6 to 33.235.1%below36.0%lowerinterval 35.7 to 36.328.7%24.0 to 33.635.5%below36.8%lowerinterval 36.5 to 37.2
Disability: San Mateo County, CA
MeasureEstimate and interval on a scale of 0 to 40%Estimate95% intervalCA figure (site aggregate)United States
Any disability among adultsBRFSS 202324.2%21.0 to 27.930.4%below30.0%lowerinterval 29.7 to 30.322.9%19.7 to 26.529.5%below28.3%lowerinterval 28.0 to 28.7
Cognitive disability among adultsBRFSS 202310.7%9.2 to 12.414.6%below13.7%lowerinterval 13.4 to 13.911.2%9.6 to 13.014.9%below14.1%lowerinterval 13.8 to 14.3
Hearing disability among adultsBRFSS 20235.4%4.7 to 6.15.9%in line6.7%lowerinterval 6.6 to 6.94.6%4.0 to 5.25.4%below5.8%lowerinterval 5.7 to 6.0
Independent living disability among adultsBRFSS 20235.9%5.0 to 6.88.1%below7.9%lowerinterval 7.7 to 8.15.7%4.9 to 6.68.0%below7.6%lowerinterval 7.4 to 7.8
Mobility disability among adultsBRFSS 202311.0%9.3 to 12.813.8%below13.5%lowerinterval 13.3 to 13.79.4%8.0 to 11.012.8%below11.7%lowerinterval 11.5 to 11.9
Self-care disability among adultsBRFSS 20232.7%2.3 to 3.13.9%below3.8%lowerinterval 3.6 to 3.92.4%2.1 to 2.83.7%below3.4%lowerinterval 3.3 to 3.6
Vision disability among adultsBRFSS 20234.0%3.5 to 4.65.6%below5.5%lowerinterval 5.4 to 5.73.7%3.3 to 4.35.5%below5.2%lowerinterval 5.1 to 5.4
Health status: San Mateo County, CA
MeasureEstimate and interval on a scale of 0 to 30%Estimate95% intervalCA figure (site aggregate)United States
Fair or poor self-rated health status among adultsBRFSS 202317.0%14.6 to 19.622.1%below19.2%similar16.1%13.7 to 18.721.6%below18.3%similar
Frequent mental distress among adultsBRFSS 202313.1%11.5 to 14.916.4%below15.6%lowerinterval 15.3 to 15.813.9%12.2 to 15.816.9%below16.3%lowerinterval 16.0 to 16.6
Frequent physical distress among adultsBRFSS 202310.9%9.5 to 12.413.4%below12.8%lowerinterval 12.6 to 13.010.1%8.9 to 11.613.0%below12.1%lowerinterval 11.8 to 12.3

ZIP Codes in San Mateo County

ZIP Codes in San Mateo County, CA, in ZIP Code order
ZIP CodeResidentsEstimate95% confidence intervalAgainst San Mateo County
ZIP Code 9400228,51321.3%17.0 to 25.8similar
ZIP Code 940054,83623.1%18.2 to 27.9similar
ZIP Code 9401044,04520.9%16.5 to 25.3similar
ZIP Code 9401448,67721.5%17.1 to 25.9similar
ZIP Code 9401563,48919.1%15.1 to 23.1similar
ZIP Code 940183,51325.7%20.6 to 30.8similar
ZIP Code 9401915,48325.8%20.5 to 31.0similar
ZIP Code 940201,73227.2%21.8 to 32.7similar
ZIP Code 9402117127.8%22.2 to 33.7similar
ZIP Code 9402542,35422.5%17.8 to 27.2similar
ZIP Code 940277,27019.6%15.3 to 24.0similar
ZIP Code 940286,90421.6%17.1 to 26.2similar
ZIP Code 9403023,21219.1%15.0 to 23.2similar
ZIP Code 940372,81125.4%20.1 to 30.9similar
ZIP Code 940383,17625.5%20.3 to 30.6similar
ZIP Code 9404438,67523.7%18.9 to 28.5similar
ZIP Code 940601,51328.1%22.5 to 33.5similar
ZIP Code 9406136,70425.3%20.1 to 30.2similar
ZIP Code 9406226,68923.1%18.3 to 27.9similar
ZIP Code 9406335,83628.3%22.7 to 33.7similar
ZIP Code 9406512,78118.7%14.7 to 22.8similar
ZIP Code 9406644,14722.8%18.2 to 27.5similar
ZIP Code 9407031,58522.2%17.6 to 26.9similar
ZIP Code 9407428227.1%21.7 to 32.8similar
ZIP Code 9408066,59222.3%17.8 to 26.9similar
ZIP Code 9440135,24925.6%20.5 to 30.6similar
ZIP Code 9440225,87921.3%16.9 to 25.8similar
ZIP Code 9440345,05722.0%17.5 to 26.5similar
ZIP Code 9440437,32318.0%14.1 to 21.9similar

The dashed line in each drawing is San Mateo County. The words are "higher" or "lower" when the two 95% confidence intervals do not overlap, and "similar" when they overlap. The table is in name order. The intervals of many rows overlap, so the table gives no rank.

A ZIP Code is in the county that holds the largest share of its land. A ZIP Code that is in two counties shows one time. Download the ZIP Codes of San Mateo County as a CSV file, with all measures.

Cities and places in San Mateo County

Places in San Mateo County, CA, in name order
PlaceResidentsEstimate95% confidence intervalAgainst San Mateo County
Atherton7,18819.6%15.3 to 24.0similar
Baywood Park1,69319.2%15.1 to 23.6similar
Belmont28,33521.3%16.9 to 25.8similar
Broadmoor4,41121.9%17.4 to 26.4similar
Burlingame31,38621.7%17.2 to 26.2similar
Colma1,50724.4%19.4 to 29.3similar
Daly City104,90120.0%15.8 to 24.2similar
East Palo Alto30,03430.6%24.9 to 36.3similar
El Granada5,48125.5%20.4 to 30.6similar
Emerald Lake Hills4,40622.2%17.6 to 26.9similar
Foster City33,80517.8%13.9 to 21.7similar
Half Moon Bay11,79525.5%20.5 to 30.8similar
Highlands2,35920.0%15.8 to 24.4similar
Hillsborough11,38718.7%14.7 to 22.8similar
La Honda97927.5%21.9 to 33.0similar
Ladera1,55721.8%17.3 to 26.5similar
Loma Mar13427.8%22.2 to 33.7similar
Menlo Park33,78022.3%17.6 to 27.0similar
Millbrae23,21619.1%15.1 to 23.2similar
Montara2,83325.5%20.1 to 31.0similar
Moss Beach3,21425.4%20.3 to 30.6similar
North Fair Oaks14,02729.2%23.5 to 34.8similar
Pacifica38,64023.7%18.9 to 28.5similar
Pescadero59527.8%22.2 to 33.5similar
Portola Valley4,45621.2%16.7 to 25.9similar
Redwood City84,29224.7%19.7 to 29.7similar
San Bruno43,90822.8%18.2 to 27.5similar
San Carlos30,72222.3%17.6 to 26.9similar
San Mateo105,66123.0%18.4 to 27.7similar
West Menlo Park3,93020.8%16.3 to 25.3similar
Woodside5,30922.5%17.7 to 27.4similar

The dashed line in each drawing is San Mateo County. The words are "higher" or "lower" when the two 95% confidence intervals do not overlap, and "similar" when they overlap. The table is in name order. The intervals of many rows overlap, so the table gives no rank.

Estimates in earlier PLACES releases

The current modeling procedure does not support using the estimates to track changes at the local level over time.

Centers for Disease Control and Prevention, PLACES Frequently Asked Questions (page dated 11 Dec 2025, read on 2 Oct 2026)

The table lists what each PLACES release published for San Mateo County, CA, for 12 of the 40 measures.

San Mateo County, CA: crude prevalence and 95% confidence interval in each PLACES release
Measure2022 release2023 release2024 release2025 release
COPD4.3%3.7 to 5.14.0%3.3 to 4.94.4%3.9 to 4.94.0%3.4 to 4.8
Coronary Heart Disease4.9%4.5 to 5.44.7%4.0 to 5.45.2%4.7 to 5.85.2%4.6 to 5.8
Current Asthma8.3%8.0 to 8.68.0%7.0 to 9.18.6%7.6 to 9.88.5%7.5 to 9.5
Depression13.4%12.8 to 14.013.8%11.4 to 16.517.0%14.5 to 19.718.1%15.5 to 20.9
Diabetes9.4%8.8 to 10.010.2%8.6 to 11.910.3%9.0 to 11.910.6%9.2 to 12.1
High Blood Pressure25.0%24.1 to 25.827.4%23.9 to 31.227.4%23.7 to 30.929.2%26.0 to 32.6
Obesity21.3%20.5 to 22.221.3%16.9 to 26.421.7%17.5 to 26.322.3%17.9 to 27.1
Health Insurance9.7%8.0 to 11.46.6%5.2 to 8.35.6%5.0 to 6.36.6%5.1 to 8.3
Binge Drinking15.6%15.2 to 16.114.2%11.7 to 17.017.4%14.4 to 20.514.6%12.3 to 17.2
Current Cigarette Smoking8.6%7.3 to 10.28.1%6.3 to 10.18.8%7.6 to 10.18.0%6.5 to 9.8
Physical Inactivity17.5%15.9 to 19.217.2%14.0 to 21.118.1%15.2 to 21.220.2%16.9 to 24.2
General Health11.0%9.8 to 12.412.5%10.5 to 14.714.0%12.5 to 15.717.0%14.6 to 19.6

Official sources

The links open the pages of the agencies in a new tab.

Cite this page

Health by ZIP. San Mateo County, CA: CDC PLACES estimates, 2025 release. Source: Centers for Disease Control and Prevention, PLACES: Local Data for Better Health. CDC updated the data on 4 Dec 2025. https://healthbyzip.com/county/ca/san-mateo-county/

The address of this page stays the same. CDC's own citation is at the foot of the page.

Where the figures come from

Source: Centers for Disease Control and Prevention, PLACES: Local Data for Better Health, 2025 release. CDC updated the data on . The page shows the 2022, 2023, 2024 releases as a record. The data are a US government work in the public domain. Data set on data.cdc.gov. The boundaries and the links between ZIP Codes, counties and places come from the US Census Bureau. Percentages have one decimal, as CDC publishes them. A state figure is a site aggregate: the site computes it. The site corrects an error of its own processing at the next build. See corrections.

Questions about San Mateo County, CA

How does the obesity estimate of San Mateo County, CA compare with California?

The California figure is 27.8% (site aggregate).

It has no confidence interval.

The whole interval of San Mateo County, CA is below the California figure.

How does the obesity estimate of San Mateo County, CA compare with the nation?

The US estimate is 32.8%.

The 95% confidence interval is 32.4% to 33.1%.

The two intervals do not overlap. The estimate for San Mateo County, CA is lower.

What does CDC estimate for diagnosed diabetes in San Mateo County, CA?

CDC estimates that 10.6% of the adults of San Mateo County, CA have diagnosed diabetes.

The 95% confidence interval is 9.2% to 12.1%.

PLACES 2025, BRFSS 2023.

For how many measures is San Mateo County, CA above or below the California figure?

San Mateo County, CA and the California figure both have a value for 40 measures.

The estimate for San Mateo County, CA is above the California figure for 3 measures.

It is below the California figure for 22 measures.

It is in line with the California figure for 15 measures.