STD Rates in Kentucky
CDC surveillance data for Kentucky covering chlamydia, gonorrhea, syphilis, and HIV — with 15-year trends, city-level context, and national comparisons.
Kentucky sits in the lower third of states for overall STD burden, ranking 37th out of 50 with a combined rate of 530.4 per 100,000 people in 2023. But that ranking obscures what's been happening beneath the surface — particularly with syphilis, which has climbed more than 540% since 2008 and now sits just below the national median after years of being almost negligible in the state.
Chlamydia remains the most common STD in Kentucky by a wide margin — 17,284 cases in 2023, at a rate of 381.9 per 100,000. That's comfortably below the national median of 471.3, and the trend is moving in a favorable direction: the rate fell 6.1% from 2022 to 2023, continuing a gradual decline after peaking around 468 in 2019. The long-run picture is less clean — rates are still about 35% higher than they were in 2008 — but the recent trajectory is downward.
Gonorrhea tells a more complicated story. At 134.4 per 100,000, Kentucky is now below the national median of 152.2 — a position that would have seemed unlikely in 2017, when the rate hit 166.6 and the state was climbing fast. Since then, it's pulled back considerably. Syphilis, by contrast, has barely budged from its recent highs: a rate of 14.1 in 2023 is just a fraction below the national median of 14.8, and it's more than seven times where the state was in 2008. The drop from 2022's rate of 14.8 is small — less than 5% — and the overall level is historically high for Kentucky.
HIV diagnoses in Kentucky rose to 402 cases in 2022, the most recent year available, pushing the rate to 10.6 per 100,000 — up from a low of 8.0 in 2020, which likely reflected pandemic-era disruptions to testing rather than a real decline. The trend since has moved upward. If you're in Louisville, Lexington, or Bowling Green, STDTest.com can help you locate a testing site nearby — for HIV, syphilis, gonorrhea, and chlamydia.
STD Trends in Kentucky
Kentucky's chlamydia rate has been falling since 2019, and in 2023 it dropped another 6.1% to 381.9 per 100,000 — about 19% below the national median of 471.3. That's a meaningful buffer, but the long view matters: rates are still roughly 35% higher than they were in 2008, meaning the baseline shifted substantially before the recent decline began. The trend is moving in the right direction, but the state hasn't returned to where it was before the mid-2000s rise.
Gonorrhea in Kentucky peaked around 2018 at 167.4 per 100,000 and has been falling since, landing at 134.4 in 2023 — now below the national median of 152.2. That's a notable reversal after years of sharp increases: between 2008 and 2017, the rate grew nearly 57%. The 11.1% year-over-year drop from 2022 to 2023 is the steepest single-year decline in the trend data, which makes it worth watching — whether it holds or bounces back will say a lot about where the state is headed.
Syphilis is where Kentucky's numbers carry the most historical weight. The rate has risen from 2.2 per 100,000 in 2008 to 14.1 in 2023 — a 540% increase over 15 years. It's now just a hair below the national median of 14.8, which is a very different position from where Kentucky sat a decade ago, when syphilis was practically a non-issue in the state. The 2023 rate did dip slightly from 14.8 in 2022, but that's a small move after a long, steep climb.
Kentucky's HIV data runs through 2022, and the most recent figure — 402 new diagnoses, a rate of 10.6 per 100,000 — is the highest in the six-year window. The 2020 dip to 301 cases almost certainly reflects reduced testing access during the pandemic rather than an actual decline in transmission. Since then, diagnoses have risen each year, suggesting the underlying trend may be upward rather than stable.
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Kentucky vs National Average
Comparing 2023 rates against the U.S. median across all 50 states.
| Infection | Kentucky | US Median | Difference |
|---|---|---|---|
| Chlamydia | 381.9 | 471.3 | 19% below |
| Gonorrhea | 134.4 | 152.2 | 11.7% below |
| Syphilis (P&S) | 14.1 | 14.8 | 4.7% below |
STD Rates by County
County-level data from CDC surveillance. Ranked by combined rate per 100,000.
| County | State Rank | Combined | Chlamydia | Gonorrhea | Syphilis |
|---|---|---|---|---|---|
| Fulton County | #1 of 120 | 1088.7 | 741.6 | 347.1 | 0.0 |
| Jefferson County | #2 of 120 | 1047.6 | 679.3 | 339.4 | 28.9 |
| Christian County | #3 of 120 | 913.5 | 685.8 | 213.8 | 13.9 |
| Franklin County | #4 of 120 | 865.6 | 687.4 | 162.7 | 15.5 |
| Fayette County | #5 of 120 | 840.8 | 612.8 | 208.0 | 20.0 |
| Henderson County | #6 of 120 | 786.4 | 553.0 | 208.5 | 24.9 |
| Mccracken County | #7 of 120 | 741.5 | 513.1 | 219.5 | 8.9 |
| Hardin County | #8 of 120 | 617.2 | 447.1 | 158.5 | 11.6 |
| Warren County | #9 of 120 | 615.9 | 435.2 | 167.3 | 13.4 |
| Daviess County | #10 of 120 | 602.1 | 404.0 | 186.5 | 11.6 |
| Whitley County | #11 of 120 | 564.9 | 467.1 | 67.9 | 29.9 |
| Hopkins County | #12 of 120 | 563.1 | 400.6 | 155.8 | 6.7 |
| Union County | #13 of 120 | 511.2 | 373.9 | 129.7 | 7.6 |
| Rowan County | #14 of 120 | 499.9 | 446.6 | 49.2 | 4.1 |
| Clay County | #15 of 120 | 473.3 | 325.7 | 61.1 | 86.5 |
| Kenton County | #16 of 120 | 465.2 | 368.9 | 86.4 | 9.9 |
| Knox County | #17 of 120 | 463.2 | 389.3 | 57.1 | 16.8 |
| Madison County | #18 of 120 | 453.7 | 356.6 | 80.6 | 16.5 |
| Mason County | #19 of 120 | 445.4 | 386.0 | 59.4 | 0.0 |
| Muhlenberg County | #20 of 120 | 441.7 | 333.7 | 108.0 | 0.0 |
| Graves County | #21 of 120 | 436.1 | 356.5 | 74.1 | 5.5 |
| Webster County | #22 of 120 | 432.2 | 290.7 | 117.9 | 23.6 |
| Clark County | #23 of 120 | 431.5 | 343.1 | 53.6 | 34.8 |
| Taylor County | #24 of 120 | 423.6 | 287.4 | 113.5 | 22.7 |
| Russell County | #25 of 120 | 410.4 | 344.7 | 60.2 | 5.5 |
| Bourbon County | #26 of 120 | 402.4 | 317.9 | 79.5 | 5.0 |
| Barren County | #27 of 120 | 395.4 | 317.7 | 64.4 | 13.3 |
| Adair County | #28 of 120 | 394.5 | 332.2 | 62.3 | 0.0 |
| Bell County | #28 of 120 | 394.5 | 291.6 | 68.6 | 34.3 |
| Monroe County | #30 of 120 | 389.2 | 230.0 | 150.4 | 8.8 |
| Livingston County | #31 of 120 | 382.4 | 269.9 | 112.5 | 0.0 |
| Marion County | #32 of 120 | 378.1 | 342.8 | 30.3 | 5.0 |
| Pulaski County | #33 of 120 | 377.7 | 267.4 | 96.7 | 13.6 |
| Scott County | #34 of 120 | 375.6 | 314.1 | 59.8 | 1.7 |
| Boyd County | #35 of 120 | 365.9 | 271.8 | 83.6 | 10.5 |
| Campbell County | #36 of 120 | 364.9 | 278.5 | 81.1 | 5.3 |
| Bath County | #37 of 120 | 362.2 | 346.8 | 7.7 | 7.7 |
| Carlisle County | #38 of 120 | 361.4 | 297.6 | 42.5 | 21.3 |
| Calloway County | #39 of 120 | 350.0 | 271.7 | 73.1 | 5.2 |
| Lewis County | #40 of 120 | 346.8 | 316.0 | 23.1 | 7.7 |
| Wolfe County | #41 of 120 | 334.3 | 159.2 | 143.3 | 31.8 |
| Bracken County | #42 of 120 | 332.3 | 284.8 | 47.5 | 0.0 |
| Powell County | #43 of 120 | 331.5 | 239.0 | 54.0 | 38.5 |
| Nelson County | #44 of 120 | 331.0 | 257.7 | 67.0 | 6.3 |
| Mccreary County | #45 of 120 | 316.7 | 211.1 | 58.7 | 46.9 |
| Wayne County | #46 of 120 | 316.6 | 245.1 | 66.4 | 5.1 |
| Woodford County | #47 of 120 | 315.3 | 253.0 | 55.0 | 7.3 |
| Montgomery County | #48 of 120 | 312.0 | 255.9 | 38.6 | 17.5 |
| Laurel County | #49 of 120 | 311.2 | 240.1 | 60.0 | 11.1 |
| Shelby County | #50 of 120 | 311.0 | 248.4 | 56.5 | 6.1 |
| Bullitt County | #51 of 120 | 309.9 | 225.1 | 76.6 | 8.2 |
| Mclean County | #52 of 120 | 309.2 | 243.0 | 55.2 | 11.0 |
| Larue County | #53 of 120 | 307.1 | 222.2 | 65.3 | 19.6 |
| Rockcastle County | #54 of 120 | 296.5 | 247.1 | 30.9 | 18.5 |
| Estill County | #55 of 120 | 294.2 | 215.3 | 57.4 | 21.5 |
| Carroll County | #56 of 120 | 291.3 | 282.2 | 9.1 | 0.0 |
| Boone County | #57 of 120 | 291.1 | 247.7 | 41.3 | 2.1 |
| Trimble County | #58 of 120 | 290.5 | 255.6 | 34.9 | 0.0 |
| Logan County | #59 of 120 | 289.9 | 222.7 | 49.5 | 17.7 |
| Ohio County | #60 of 120 | 287.8 | 237.0 | 46.6 | 4.2 |
| Green County | #61 of 120 | 287.7 | 235.4 | 43.6 | 8.7 |
| Butler County | #62 of 120 | 282.9 | 218.2 | 48.5 | 16.2 |
| Grant County | #63 of 120 | 281.0 | 226.4 | 54.6 | 0.0 |
| Floyd County | #64 of 120 | 278.9 | 238.2 | 34.9 | 5.8 |
| Jessamine County | #65 of 120 | 274.5 | 216.3 | 52.7 | 5.5 |
| Fleming County | #66 of 120 | 272.0 | 233.1 | 32.4 | 6.5 |
| Trigg County | #67 of 120 | 271.4 | 222.7 | 48.7 | 0.0 |
| Hickman County | #68 of 120 | 269.9 | 247.4 | 22.5 | 0.0 |
| Washington County | #69 of 120 | 269.1 | 228.3 | 32.6 | 8.2 |
| Ballard County | #70 of 120 | 263.8 | 211.0 | 52.8 | 0.0 |
| Jackson County | #71 of 120 | 259.5 | 183.2 | 30.5 | 45.8 |
| Perry County | #72 of 120 | 258.0 | 143.7 | 103.2 | 11.1 |
| Metcalfe County | #73 of 120 | 257.6 | 162.2 | 66.8 | 28.6 |
| Todd County | #74 of 120 | 256.1 | 184.1 | 72.0 | 0.0 |
| Caldwell County | #75 of 120 | 254.9 | 135.4 | 119.5 | 0.0 |
| Pike County | #76 of 120 | 253.7 | 210.8 | 42.9 | 0.0 |
| Leslie County | #77 of 120 | 253.5 | 182.5 | 50.7 | 20.3 |
| Anderson County | #78 of 120 | 251.9 | 186.9 | 56.9 | 8.1 |
| Owsley County | #79 of 120 | 249.9 | 249.9 | 0.0 | 0.0 |
| Martin County | #80 of 120 | 247.1 | 183.0 | 54.9 | 9.2 |
| Magoffin County | #81 of 120 | 240.5 | 222.7 | 17.8 | 0.0 |
| Garrard County | #82 of 120 | 235.6 | 179.5 | 44.9 | 11.2 |
| Harlan County | #83 of 120 | 233.0 | 169.8 | 39.5 | 23.7 |
| Oldham County | #84 of 120 | 228.0 | 181.0 | 39.9 | 7.1 |
| Hart County | #85 of 120 | 223.1 | 142.0 | 71.0 | 10.1 |
| Breckinridge County | #86 of 120 | 222.4 | 184.6 | 33.1 | 4.7 |
| Clinton County | #87 of 120 | 218.6 | 174.9 | 43.7 | 0.0 |
| Johnson County | #88 of 120 | 217.0 | 176.3 | 40.7 | 0.0 |
| Harrison County | #89 of 120 | 216.3 | 195.7 | 20.6 | 0.0 |
| Boyle County | #89 of 120 | 216.3 | 177.5 | 32.3 | 6.5 |
| Robertson County | #91 of 120 | 216.2 | 216.2 | 0.0 | 0.0 |
| Nicholas County | #92 of 120 | 208.1 | 169.1 | 39.0 | 0.0 |
| Casey County | #93 of 120 | 207.3 | 175.9 | 25.1 | 6.3 |
| Henry County | #94 of 120 | 206.6 | 162.8 | 43.8 | 0.0 |
| Lee County | #95 of 120 | 205.7 | 192.0 | 13.7 | 0.0 |
| Hancock County | #96 of 120 | 201.8 | 134.5 | 56.1 | 11.2 |
| Letcher County | #97 of 120 | 200.7 | 102.8 | 88.1 | 9.8 |
| Grayson County | #98 of 120 | 197.5 | 149.1 | 44.7 | 3.7 |
| Allen County | #99 of 120 | 197.3 | 114.7 | 82.6 | 0.0 |
| Greenup County | #100 of 120 | 195.9 | 159.0 | 31.2 | 5.7 |
| Lincoln County | #101 of 120 | 193.7 | 173.6 | 16.1 | 4.0 |
| Crittenden County | #102 of 120 | 189.4 | 100.3 | 89.1 | 0.0 |
| Meade County | #103 of 120 | 189.2 | 142.7 | 36.5 | 10.0 |
| Simpson County | #104 of 120 | 178.2 | 138.6 | 39.6 | 0.0 |
| Edmonson County | #105 of 120 | 176.7 | 120.5 | 32.1 | 24.1 |
| Marshall County | #106 of 120 | 176.5 | 154.4 | 18.9 | 3.2 |
| Lawrence County | #107 of 120 | 162.5 | 118.8 | 31.2 | 12.5 |
| Spencer County | #108 of 120 | 155.9 | 116.9 | 34.1 | 4.9 |
| Knott County | #109 of 120 | 153.8 | 124.5 | 22.0 | 7.3 |
| Pendleton County | #110 of 120 | 148.5 | 108.0 | 27.0 | 13.5 |
| Carter County | #111 of 120 | 144.1 | 113.8 | 26.5 | 3.8 |
| Menifee County | #112 of 120 | 143.2 | 111.4 | 15.9 | 15.9 |
| Mercer County | #113 of 120 | 142.9 | 129.9 | 13.0 | 0.0 |
| Gallatin County | #114 of 120 | 136.5 | 125.1 | 11.4 | 0.0 |
| Owen County | #115 of 120 | 114.9 | 70.7 | 44.2 | 0.0 |
| Morgan County | #116 of 120 | 112.0 | 98.0 | 0.0 | 14.0 |
| Breathitt County | #117 of 120 | 100.3 | 92.6 | 0.0 | 7.7 |
| Cumberland County | #118 of 120 | 100.1 | 66.7 | 16.7 | 16.7 |
| Lyon County | #119 of 120 | 98.0 | 76.2 | 21.8 | 0.0 |
| Elliott County | #120 of 120 | 96.6 | 55.2 | 41.4 | 0.0 |
What the numbers mean — and what to do about them
Put Kentucky's numbers in human terms: 17,284 chlamydia diagnoses, 6,081 gonorrhea cases, and 638 syphilis cases in a single year — among a state of about 4.5 million people. The combined rate of 530.4 per 100,000 places Kentucky below the national midpoint, ranking 37th. That's not a crisis profile, but it means tens of thousands of Kentuckians are receiving new STD diagnoses annually, and an unknown number are carrying infections they haven't detected yet.
The trend that deserves the most attention is syphilis. A 540% increase since 2008 is not the kind of change that happens overnight, and Kentucky's rate — now just below the national median — reflects a sustained shift in the state's disease landscape. Syphilis is particularly relevant because it's frequently asymptomatic in early stages, meaning someone can carry and transmit it without any obvious signs. The same is true for chlamydia, which remains the most prevalent STD in the state despite recent declines. Infections that go undetected don't just affect the individual — they continue to spread.
If you live in Louisville, Lexington, or Bowling Green, testing is accessible and straightforward. Most sites can screen for all the major STDs in a single visit, and results typically come back within days. Kentucky's syphilis rate has climbed steadily for 15 years — and most of that climb happened quietly, without people knowing they were part of it. STDTest.com can show you exactly where to get tested today.
WHO SHOULD GET TESTED
Sexually active adults in Kentucky — particularly those under 30, who account for the majority of chlamydia cases, and anyone with new or multiple partners. Given that Kentucky's syphilis rate has risen to near the national median and gonorrhea remains widespread, testing isn't just for people with symptoms. Most people who test positive had no idea.
HOW OFTEN
Once a year is a reasonable floor for sexually active adults in Kentucky, where chlamydia rates are still 35% above 2008 levels despite recent declines. If you have multiple or new partners, every three to six months makes sense. Kentucky's syphilis trend in particular argues for staying current — rates have climbed almost every year for a decade and a half.
WHAT TO EXPECT
STD testing is quick and mostly non-invasive — typically a urine sample, a swab, or a blood draw depending on what's being tested. Results for chlamydia and gonorrhea usually come back within 1–3 days; syphilis and HIV results may take slightly longer. If something comes back positive, treatment for bacterial STDs like chlamydia, gonorrhea, and syphilis is straightforward with antibiotics.
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