STD Rates in Arapahoe County, Colorado
2023 CDC surveillance data for Arapahoe County, Colorado — chlamydia, gonorrhea, and syphilis rates with state comparisons.
Arapahoe County has one of the higher STD burdens in Colorado, with a combined rate of 709.1 per 100,000 residents in 2023 — ranking 5th of 61 counties. Reported infections included chlamydia at 528.2 per 100,000 (3,465 cases, 21% above the state rate), gonorrhea at 159.7 per 100,000 (1,048 cases, 24% above the state rate), syphilis at 21.2 per 100,000 (139 cases, 32% above the state rate). Routine testing is the surest way to catch STDs early, since many produce no symptoms. Arapahoe County has confidential testing locations available.
STD Trends in Arapahoe County, 2000–2023
Reported cases per 100,000 residents each year, against the Colorado rate (dashed). In a county this size a handful of cases moves the rate a long way, so read the shape rather than any single year.
Source: CDC NCHHSTP AtlasPlus county surveillance, 2000–2023.
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Arapahoe County vs Colorado and the US
| Infection | Arapahoe County | Colorado | US | vs Colorado | vs US | Rank in Colorado |
|---|---|---|---|---|---|---|
| Chlamydia | 528.23,465 cases | 435.1 | 490.7 | 21.4% above | 7.6% above | 4th of 61 |
| Gonorrhea | 159.71,048 cases | 128.7 | 178.2 | 24.1% above | 10.4% below | 4th of 61 |
| Syphilis (P&S) | 21.2139 cases | 16 | 15.8 | 32.5% above | 34.2% above | 9th of 61 |
Rates per 100,000 residents, 2023. Ranks run from the highest rate (1st) among Colorado’s counties. The US rate is all 50 states combined. Comparisons are left out where fewer than 20 cases were reported, because a rate built on so few cases can swing widely from one year to the next.
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