Ohio State Senate District 9

State Legislative District Profile (Upper Chamber)

Overview

District ID
oh-sd-009
State
Ohio
Chamber
Upper chamber (state senate)
District Code
009
Land Area
87.1 sq mi
Water Area
1.82 sq mi

Boundary

Boundary of Ohio State Senate District 9

Boundary as GeoJSON

Source: U.S. Census Bureau TIGER/Line state legislative district boundaries.

Counties

CountyOverlapShare of district landShare of county land
Hamilton County87.05 sq mi99.9%21.5%

Showing all 1 county

Places

PlaceOverlapShare of district landShare of place land
Cincinnati city77.84 sq mi89.4%99.9%
Norwood city3.14 sq mi3.6%100.0%
St. Bernard village1.56 sq mi1.8%100.0%
Mariemont village0.89 sq mi1.0%100.0%
Fairfax village0.77 sq mi0.9%98.4%
Golf Manor village0.58 sq mi0.7%99.3%
Elmwood Place village0.33 sq mi0.4%100.0%
Arlington Heights village0.26 sq mi0.3%99.8%
Madison Place CDP0.09 sq mi0.1%99.1%
Plainville CDP0.09 sq mi0.1%100.0%

Showing all 10 places

Overlapping Congressional Districts

Congressional districtPopulation in bothShare of this district's populationShare of the congressional district's populationShare of this district's land
OH District 1348,124100.0%44.3%100.0%

Source: U.S. Census Bureau 2020 blocks and 2025 block equivalency files (119th Congress, 2024 state legislative plans).

Voters

Registered Voters
244,768
Active Voters
187,649 (76.7%)

Party Registration

PartyVotersShare
Democratic27,40611.2%
Republican12,7875.2%
Unaffiliated00.0%
Other parties00.0%
No party recorded204,57583.6%

Turnout by Cycle

CycleGeneralDemocratic PrimaryRepublican Primary
2025–202675,378 (30.8%)<10 (—)<10 (—)
2023–2024149,299 (61.0%)16,190 (6.6%)8,990 (3.7%)
2021–2022103,114 (42.1%)23,232 (9.5%)10,616 (4.3%)
2019–2020141,993 (58.0%)34,900 (14.3%)6,749 (2.8%)
2017–2018107,635 (44.0%)22,232 (9.1%)7,759 (3.2%)
2015–2016123,097 (50.3%)41,438 (16.9%)23,081 (9.4%)
2013–201466,041 (27.0%)8,406 (3.4%)4,762 (1.9%)
2011–2012106,823 (43.6%)6,964 (2.8%)10,716 (4.4%)

Turnout counts today's registered voters with a counted ballot in the cycle's elections (the odd and even year), as a share of today's registered voters. Voters who have since left the rolls are not counted.

Browse the voter list for this district (premium access; sign-in required)

Source: Civitech voter file snapshot as of 01/20/2026. These are registered voters, separate from the Census population figures. Counts under 10 are suppressed and shown as "<10".

Demographics

Total Population
349,562 (± 580)
Median Age
33.4
Median Household Income
$54,306 (± $1,962)
High School Graduate or Higher (age 25+)
90.2%
Bachelor's Degree or Higher (age 25+)
41.8%

Population by Age

GroupPeopleShare
Under 1873,07120.9%
18 to 64229,21765.6%
65 and over47,27413.5%

Population by Race and Hispanic Origin

GroupPeopleShare
Hispanic or Latino (any race)20,7675.9%
White, not Hispanic178,36151.0%
Black, not Hispanic118,62633.9%
Asian, not Hispanic8,4692.4%
American Indian / Alaska Native, not Hispanic4210.1%
Native Hawaiian / Pacific Islander, not Hispanic1020.0%
Some other race, not Hispanic2,6080.7%
Two or more races, not Hispanic20,2085.8%

Source: U.S. Census Bureau, American Community Survey 2020-2024 ACS 5-year estimates (tables B01001, B01002, B01003, B03002, B15003, B19013) for this state legislative district. Estimates are survey-based; ± figures are 90% margins of error.

Citizen Voting Age Population

Total Citizen Population
335,063
Citizen Voting Age Population (CVAP)
263,860

Citizen Population by Race/Ethnicity

GroupCitizensShare
Non-Hispanic319,49295.4%
Hispanic15,5704.6%
White179,20053.5%
Black117,89935.2%
Asian5,0261.5%
American Indian / Alaska Native4220.1%
Native Hawaiian / Pacific Islander1030.0%
Two or More Races1,9540.6%

Citizen Voting Age Population by Race/Ethnicity

GroupCVAPShare
Non-Hispanic255,72196.9%
Hispanic8,1453.1%
White154,49858.6%
Black91,43634.7%
Asian5,3522.0%
American Indian / Alaska Native4,5721.7%
Native Hawaiian / Pacific Islander890.0%
Two or More Races1,0730.4%

Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).