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Local Data: Alameda County, CA

In 2021, there were 5,986 people living with HIV in Alameda County.
In 2021, 185 people were newly diagnosed with HIV.

HIV Prevalence

Number of people living with HIV, 2021 5,986

Rate of people living with HIV per 100,000 population, 2021 424

Percent of people living with HIV, by Sex, 2021

83.7% 16.3%
  • Male
  • Female

Percent of people living with HIV, by Race/Ethnicity, 2021

36.9% 23.5% 27.3%
  • Black
  • Hispanic/Latinx
  • White

Percent of people living with HIV, by Age, 2021

1.6% 13.4% 17.8% 22.4% 44.7%
  • Aged 13-24
  • Aged 25-34
  • Aged 35-44
  • Aged 45-54
  • Aged 55+

Rate of people living with HIV per 100,000 population, by Geography, 2021

500 400 300 200 100 0 424 County 411 State 323 Region 384 United States

New HIV Diagnoses

Number of new HIV diagnoses, 2021 185

Rate of new HIV diagnoses per 100,000 population, 2021 13

Percent of people newly diagnosed with HIV, by Sex, 2021

83.2% 16.8%
  • Male
  • Female

Percent of people newly diagnosed with HIV, by Race/Ethnicity, 2021

31.9% 38.9% 16.8%
  • Black
  • Hispanic/Latinx
  • White

Percent of people newly diagnosed with HIV, by Age, 2021

10.8% 33.0% 29.7% 15.1% 11.4%
  • Aged 13-24
  • Aged 25-34
  • Aged 35-44
  • Aged 45-54
  • Aged 55+

Number of New HIV Diagnoses, 2008-2021

Number of New HIV Diagnoses 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 100 200 300 233 269 235 215 232 213 211 264 269 204 201 219 159 185

Rate of people newly diagnosed with HIV per 100,000 population, by Geography, 2021

20 16 12 8 4 0 13 County 13 State 11 Region 13 United States

PrEP (Pre-Exposure Prophylaxis)

Number of PrEP users, 2022 2,508

Rate of PrEP users per 100,000 population, 2022 191

Percent of PrEP users, by Sex, 2022

90.2% 9.9%
  • Male
  • Female

Percent of PrEP users, by Age, 2022

11.8% 41.7% 26.4% 11.8% 8.7%
  • Aged 13-24
  • Aged 25-34
  • Aged 35-44
  • Aged 45-54
  • Aged 55+

Number of PrEP Users, 2012-2022

Number of PrEP Users 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 0 1,300 2,600 66 93 202 498 897 1,256 1,639 1,944 1,866 2,091 2,508

PrEP-to-Need Ratio (PNR)

The 2022 PrEP-to-Need Ratio (PNR) is the ratio of the number of PrEP users in 2022 to the number of people newly diagnosed with HIV in 2021. PNR serves as a measurement for whether PrEP use appropriately reflects the need for HIV prevention. A lower PNR indicates more unmet need.

PNR, 2022 13.56

PNR, by Sex, 2022 Male: 14.69 Female: 8.03

PNR, by Age, 2022 Aged 13-24: 14.75 Aged 25-34: 17.13 Aged 35-44: 12.04 Aged 45-54: 10.54 Aged 55+: 10.38

PNR, 2012-2022

PNR 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 0.00 10.00 20.00 0.28 0.44 0.96 1.89 3.33 6.16 8.15 8.88 11.74 11.30 13.56

HIV Continuum of Care, 2021

Late Diagnoses and Linked to Care are among people newly diagnosed with HIV and Receipt of Care and Viral Suppression are among all people living with HIV.

100 80 60 40 20 23.2% Late Diagnoses 87.6% Linked to Care 79.3% Receipt of Care 71.5% Viral Suppression Diagnoses-based HIV Continuum Care, 2021

Late HIV Diagnoses

A late HIV diagnosis is defined as having an AIDS diagnosis within three months of initial HIV diagnosis.

Number of new HIV diagnoses that were diagnosed late, 2021 43

Percent of new HIV diagnoses that were diagnosed late, 2021 23.2%

Linked to HIV Care

Linkage to care is defined as having a visit with a health care provider and getting a CD4 or viral load test within one month of being diagnosed with HIV.

Number of people diagnosed with HIV and linked to HIV care, 2021 162

Proportion of people linked to HIV care, by Sex, 2021 Male: 87.7% Female: 87.1%

Proportion of people linked to HIV care, by Race/Ethnicity, 2021 Black: 83.1% Hispanic/Latinx: 90.3% White: 87.1%

Percent of people diagnosed with HIV and linked to HIV care, 2021 87.6%

Proportion of people linked to HIV care, by Age, 2021 Aged 13-24: 90.0% Aged 25-34: 93.4% Aged 35-44: 81.8% Aged 45-54: 89.3% Aged 55+: 81.0%

Receipt of HIV Care

Receipt of HIV care is defined as those living with diagnosed HIV who received medical care for HIV and had at least one CD4 count or HIV viral load test in that year.

Number of people living with HIV who received HIV care, 2021 4,607

Proportion of people who received HIV care, by Sex, 2021 Male: 79.8% Female: 77.0%

Proportion of people who received HIV care, by Race/Ethnicity, 2021 Black: 77.6% Hispanic/Latinx: 77.6% White: 82.0%

Percent of people living with HIV who received HIV care, 2021 79.3%

Proportion of people who received HIV care, by Age, 2021 Aged 13-24: 84.3% Aged 25-34: 78.0% Aged 35-44: 77.3% Aged 45-54: 77.5% Aged 55+: 81.3%

Viral Suppression

Viral suppression is defined as those living with diagnosed HIV who had suppressed HIV viral load (<200 copies/mL).

Number of people living with HIV who were virally suppressed, 2021 4,152

Proportion of people who were virally suppressed, by Sex, 2021 Male: 72.3% Female: 67.4%

Proportion of people who were virally suppressed, by Race/Ethnicity, 2021 Black: 67.8% Hispanic/Latinx: 71.1% White: 75.2%

Percent of people living with HIV who were virally suppressed, 2021 71.5%

Proportion of people who were virally suppressed, by Age, 2021 Aged 13-24: 71.3% Aged 25-34: 66.4% Aged 35-44: 68.6% Aged 45-54: 69.7% Aged 55+: 75.3%

Demographics, 2020

Total Population 1,682,353

County Population by Race/Ethnicity

  • American Indian / Alaska Native (0.2%)
  • Asian (32.1%)
  • Black (9.5%)
  • Hispanic / Latinx (23.4%)
  • Native Hawaiian / Other Pacific Islander (0.8%)
  • White (28.1%)
  • Other/Unknown* (5.9%)

*Includes other races/ethnicities or missing/suppressed data

Urbanicity, 2013

More Urban More Rural 1 2 3 4 5 6

*Full CDC urbanicity definitions can be found here.

People Living with HIV, by Transmission Category, 2021

Percent of People Living with HIV, by Transmission Category, 2021

Male Transmission Categories

  • Injection Drug Use (4.6%)
  • Heterosexual Contact (6.5%)
  • Male-to-Male Sexual Contact (67.3%)
  • Male-to-Male Sexual Contact & Injection Drug Use (6.6%)
  • Other/Unknown* (15.0%)

Female Transmission Categories

  • Injection Drug Use (20.8%)
  • Heterosexual Contact (76.0%)
  • Other/Unknown* (3.2%)

*Includes risk factor not reported or identified, along with hemophilia, blood transfusion, perinatal exposure, or missing/suppressed data.

HIV Testing, 2016-2017

Percent ever tested for HIV, 2016-2017 38%

Percent tested in the past year for HIV, 2016-2017 8%

Social Determinants of Health, 2021

  • County
  • State
  • Region
  • United States
89.0% 84.2% 87.5% 88.9%

Percent of Population with a High School Education, 2021

0.463 0.487 0.477 0.482

Income Inequality (Gini Coefficient), 2021

8.9% 12.3% 11.9% 12.6%

Percent of Population Living in Poverty, 2021

$112,017 $84,097 $77,477 $69,021

Median Household Income, 2021

4.8% 8.2% 9.1% 10.3%

Percent of Population (<65) Lacking Health Insurance, 2021

6.1% 7.3% 6.2% 5.3%

Percent of Population Unemployed, 2021

17.3% 19.6% 16.5% 14.3%

Percent of Population Living in Unstable Housing, 2021

Sexually Transmitted Diseases, 2021

500 400 300 200 100 0 451.8 488.2 469.2 495.5 Chlamydia 231.1 233.1 205.6 214.0 Gonorrhea 12.0 22.2 20.9 16.2 Syphilis Rates of Sexually Transmitted Diseases per 100,000 Population, 2021
  • County
  • State
  • Region
  • United States

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