How many epidemiologists are in the US? (2025 count by state)
Leadz.biz counts 21,999 epidemiologists in the United States as of December 14, 2025. That is 6.6 per 100,000 US residents, using the 2020 Census resident population. The figure is the number of businesses listed on Google Maps under this category in the Leadz database; it is not a census or a licensing count.
Number of epidemiologists by state
51 states and districts with at least one listing, largest first. Data as of December 14, 2025.
| State | Businesses | Share of US total | Per 100,000 residents | Email on file | Avg. Google rating |
|---|---|---|---|---|---|
| California | 2,366 | 10.8% | 6.0 | 14.6% | 4.47 |
| Florida | 1,719 | 7.8% | 8.0 | 13.7% | 4.58 |
| Texas | 1,544 | 7.0% | 5.3 | 13.4% | 4.50 |
| New York | 1,344 | 6.1% | 6.7 | 13.2% | 4.56 |
| Pennsylvania | 1,007 | 4.6% | 7.7 | 12.0% | 4.38 |
| Michigan | 982 | 4.5% | 9.7 | 8.0% | 4.49 |
| Georgia | 846 | 3.8% | 7.9 | 10.8% | 4.52 |
| Illinois | 780 | 3.5% | 6.1 | 13.1% | 4.19 |
| Ohio | 759 | 3.5% | 6.4 | 10.0% | 4.32 |
| New Jersey | 739 | 3.4% | 8.0 | 12.2% | 4.74 |
| North Carolina | 701 | 3.2% | 6.7 | 14.0% | 4.61 |
| Colorado | 566 | 2.6% | 9.8 | 15.0% | 4.61 |
| Washington | 526 | 2.4% | 6.8 | 14.3% | 4.65 |
| Arizona | 504 | 2.3% | 7.0 | 17.3% | 4.49 |
| Virginia | 495 | 2.3% | 5.7 | 16.0% | 4.47 |
| Massachusetts | 481 | 2.2% | 6.8 | 22.7% | 4.54 |
| Tennessee | 481 | 2.2% | 7.0 | 12.9% | 4.52 |
| Maryland | 464 | 2.1% | 7.5 | 14.9% | 4.51 |
| Wisconsin | 410 | 1.9% | 7.0 | 11.2% | 4.34 |
| Minnesota | 375 | 1.7% | 6.6 | 17.6% | 4.55 |
| Oregon | 342 | 1.6% | 8.1 | 13.5% | 4.70 |
| Indiana | 341 | 1.6% | 5.0 | 13.8% | 4.43 |
| South Carolina | 294 | 1.3% | 5.7 | 9.2% | 4.59 |
| Utah | 287 | 1.3% | 8.8 | 10.8% | 4.51 |
| Alabama | 282 | 1.3% | 5.6 | 6.4% | 4.07 |
| Connecticut | 275 | 1.3% | 7.6 | 12.4% | 4.37 |
| Missouri | 266 | 1.2% | 4.3 | 13.2% | 4.57 |
| Kentucky | 228 | 1.0% | 5.1 | 10.1% | 4.45 |
| Louisiana | 218 | 1.0% | 4.7 | 9.6% | 4.63 |
| Nevada | 194 | 0.9% | 6.2 | 10.3% | 4.37 |
| Mississippi | 192 | 0.9% | 6.5 | 5.2% | 4.32 |
| Kansas | 188 | 0.9% | 6.4 | 12.8% | 4.25 |
| Oklahoma | 164 | 0.7% | 4.1 | 14.0% | 4.44 |
| Iowa | 149 | 0.7% | 4.7 | 14.8% | 4.48 |
| Idaho | 143 | 0.7% | 7.8 | 11.9% | 4.68 |
| Maine | 128 | 0.6% | 9.4 | 16.4% | 4.36 |
| Delaware | 126 | 0.6% | 12.7 | 15.1% | 4.22 |
| New Hampshire | 122 | 0.6% | 8.9 | 17.2% | 4.77 |
| Arkansas | 120 | 0.5% | 4.0 | 7.5% | 4.24 |
| New Mexico | 119 | 0.5% | 5.6 | 15.1% | 4.35 |
| Nebraska | 96 | 0.4% | 4.9 | 18.8% | 4.18 |
| Montana | 89 | 0.4% | 8.2 | 11.2% | 4.59 |
| Hawaii | 87 | 0.4% | 6.0 | 13.8% | - |
| Vermont | 78 | 0.4% | 12.1 | 14.1% | 4.43 |
| West Virginia | 78 | 0.4% | 4.3 | 5.1% | 4.11 |
| Rhode Island | 71 | 0.3% | 6.5 | 21.1% | 4.20 |
| Wyoming | 66 | 0.3% | 11.4 | 10.6% | 4.82 |
| District of Columbia | 65 | 0.3% | 9.4 | 18.5% | 3.88 |
| South Dakota | 39 | 0.2% | 4.4 | 5.1% | 4.89 |
| North Dakota | 32 | 0.1% | 4.1 | 18.8% | 4.20 |
| Alaska | 31 | 0.1% | 4.2 | 9.7% | 4.71 |
| United States | 21,999 | 100.0% | 6.6 | 13.1% | 4.50 |
State names link to the state list for the 12 largest states. "Email on file" is the share of listings with a stored email address; it is not a deliverability check.
Key findings
- California has the largest number of epidemiologists of any state: 2,366, or 10.8% of the US total.
- The three largest states (California, Florida and Texas) together account for 25.6% of the US total.
- Relative to population, Delaware has the most epidemiologists (12.7 per 100,000 residents) and Arkansas the fewest (4.0 per 100,000), among states with at least 50 counted.
- 13.1% of the epidemiologists counted (2,886 of 21,999) have an email address on file.
- The average Google rating across the epidemiologists counted is 4.50 out of 5.
Methodology
Each figure is the number of businesses listed on Google Maps that are in the Leadz database under the Epidemiologist category as of December 14, 2025.
This is not a census or a licensing count. A business can be missing from the database or filed under a different category. State figures may not add up to the US figure because some listings are outside the 50 states and the District of Columbia or have no state on record.
Per-capita figures divide each count by the 2020 Census resident population of the state (US figure: the 50 states and the District of Columbia) and multiply by 100,000. Share of US total divides each state count by the US figure.
Cite this page
Leadz.biz. "How many epidemiologists are in the US? (2025 count by state)." Data as of December 14, 2025. https://www.leadz.biz/statistics/epidemiologists
Browse the Epidemiologists list or see statistics for other categories.