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Jefferson County
Jefferson County, Missouri
At a Glance
Population 226,739 County Seat Jefferson County Courthouse State FIPS 29 County FIPS 099 Num Towns 26 Census-Designated Places 10 Total Town Population 106,042 Census Source Census ACS 5-Year 2022
People & Demographics
Population (official) 226,984 Median Age 39.9 Veterans 14,322 Housing Units 92,590 Uninsured 2,109 Net Migration (recent) 4,026 Growing Yes
Economy & Employment
Total Establishments 3,930 Total Employees 41,080 Avg Annual Pay $49,615 Median Household Income $77,217 Poverty Rate 8.3% Unemployment Rate 3.7% Avg AGI per Return (IRS) $69,815 Federal Spending FY2024 $1,383,585,580 Federal Spending Per Capita $6,102
Housing & Cost of Living
Median Home Value $202,500 Median Rent $957 FMR Studio $951 FMR 1BR $984 FMR 2BR $1,215 FMR 3BR $1,570 FMR 4BR $1,806
Health & Safety
Hospitals 52 EMS Stations 78 Fire Stations 78 Police Stations 78 Adult Smoking 19.5% Adult Obesity 37.3% Overdose Deaths Rate/100k 58.2 Air Quality Good Days 292
Infrastructure
Electricity Price (¢/kWh) 12.91 Electric Customers 2933914 Towns with Broadband Data 26 Towns with 90%+ Coverage 26
Community
Churches 145 Libraries 26 Historic Places (NRHP) 15 Homeless Population N/A Schools 359 SNAP Stores 124 Bank Branches 51
Agriculture
Total Farms 656 Land in Farms (acres) 1,089 Avg Farm Size (acres) 1.7 Year 2,022
Recent Federal Disaster Declarations (15)
Type Title Date DR SEVERE STORMS, STRAIGHT-LINE WINDS, TORNADOES, AND WILDFIRES 2025-05-21 DR COVID-19 PANDEMIC 2020-03-26 EM COVID-19 2020-03-13 DR SEVERE STORMS, TORNADOES, AND FLOODING 2019-07-09 DR SEVERE STORMS, TORNADOES, STRAIGHT-LINE WINDS AND FLOODING 2017-06-02 DR SEVERE STORMS, TORNADOES, STRAIGHT-LINE WINDS, AND FLOODING 2016-01-21 EM SEVERE STORMS, TORNADOES, STRAIGHT-LINE WINDS, AND FLOODING 2016-01-02 DR SEVERE STORMS, TORNADOES, STRAIGHT-LINE WINDS, AND FLOODING 2015-08-07 EM SEVERE WINTER STORM 2011-02-03 DR SEVERE STORMS, TORNADOES, AND FLOODING 2009-06-19
Detailed Topics
Communities in Jefferson County
Arnold — pop 20,858Festus — pop 12,706Eureka — pop 11,646Murphy — pop 8,425De Soto — pop 6,449Pevely — pop 6,026Barnhart — pop 5,832Crystal City — pop 4,740Herculaneum — pop 4,672Imperial — pop 4,407High Ridge — pop 4,242Hillsboro — pop 3,473Byrnes Mill — pop 3,173Raintree Plantation — pop 1,996Cedar Hill — pop 1,875LaBarque Creek — pop 1,658Summer Set — pop 1,127Olympian Village — pop 719Horine — pop 657Briarwood Estates — pop 347Lake Tekakwitha — pop 230Cedar Hill Lakes — pop 203Scotsdale — pop 194Parkdale — pop 159Kimmswick — pop 133Peaceful Village — pop 95
Data sources: Census ACS, BLS QCEW, IRS SOI, USAspending.gov, County Health Rankings, EPA AQI, HUD FMR, NCES, FEMA, National Register of Historic Places, CDC, EIA.
