Jefferson County Demographic Statistics

2025 Population 2023 Population Median Age Median Income
235,285 231,230 40.2 years $80,522

Jefferson County Population Trends

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population icon 2025 Projected Population

The 2025 projected population for Jefferson County is 235,285. This projection assumes an annual rate of change of 0.9%, consistent with the population change from 2022 to 2023 according to the US Census Bureau's 2023 Population Estimates Program.

population icon 2023 Population

With 231,230 people, Jefferson County is the 7th most populated county in the state of Missouri out of 115 counties according to the most current US Census data. But watch out, Jefferson County, because Boone County with 189,463 people and Jasper County with 125,056 people are right behind you.

race icon Race & Ethnicity

The largest Jefferson County racial/ethnic groups are White (89.0%) followed by Two or More (6.0%) and Hispanic (2.5%).

income icon Median Income

In 2023, the median household income of Jefferson County households was $80,522. Jefferson County households made slightly more than Lafayette County households ($79,091) and Warren County households ($77,989) . However, 5.7% of Jefferson County families live in poverty.

age icon Median Age

The median age for Jefferson County residents is 40.2 years young.

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1 Geography State County City Population Median Household Income Average Household Income Household Income Distribution Race & Ethnicity Age & Sex Median Age Educational Attainment Poverty Unemployment Homes Households Land Area (square miles) GEOID Population Percent Change Notes
2 Total
3 Most Current Population Year Population Population Density
(square miles)		 Total Female Male Total Occupied Homes Families Married Couple Families Single Parent Families Non-families (unrelated people sharing a home)
4 Households Less than $25,000 $25,000 to $49,999 $50,000 to $74,999 $75,000 to $99,999 $100,000 to $149,999 $150,000 to $199,999 $200,000+ Total White Black Native Asian Islander Other Two or More Hispanic or Latino 0 to 9 Years 10 to 19 Years 20 to 29 Years 30 to 39 Years 40 to 49 Years 50 to 59 Years 60 to 69 Years 70+ Years 0 to 9 Years 10 to 19 Years 20 to 29 Years 30 to 39 Years 40 to 49 Years 50 to 59 Years 60 to 69 Years 70+ Years Population 25+ Years No Diploma High School Some College Bachelors Degree Advanced Degree Family Households Family Poverty Civilian Labor Force 16+ Years Unemployment Rate Occupied Owner-Occupied Renter-Occupied Median Value of Owner-Occupied Homes Total With Own Children Under 18 Years Total With Own Children Under 18 Years 2000 2010 2020 2030 Projected 2000 to 2010 2010 to 2020 2020 to 2030
5 name state county city most_current_pop_year population pop_dens_sq_mi mhhi avghhi hhi_total_hh hhi_hh_w_lt_25k hhi_hh_w_25k_49k hhi_hh_w_50k_74k hhi_hh_w_75k_99k hhi_hh_w_100k_149k hhi_hh_w_150k_199k hhi_hh_w_200k_plus race_ethnicity_total race_ethnicity_white race_ethnicity_black race_ethnicity_native race_ethnicity_asian race_ethnicity_islander race_ethnicity_other race_ethnicity_two race_ethnicity_hispanic age_total age_f_0_9 age_f_10_19 age_f_20_29 age_f_30_39 age_f_40_49 age_f_50_59 age_f_60_69 age_f_70_plus age_m_0_9 age_m_10_19 age_m_20_29 age_m_30_39 age_m_40_49 age_m_50_59 age_m_60_69 age_m_70_plus median_age edu_att_pop_25_plus edu_att_no_diploma edu_att_high_school edu_att_some_college edu_att_bachelors edu_att_graduate family_hh_total family_poverty_pct emp_status_civ_labor_force unemployment_pct housing_units occupied_units owner_occupied renter_occupied median_value_owner_occupied_units households hh_families hh_mc_families hh_mc_with_own_children_under_18 hh_sp_families hh_sp_with_own_children_under_18 hh_non_families aland_sq_mi geoid pop_2000 pop_2010 pop_2020 pop_2030 per_00_10 per_10_20 per_20_30 notes
16 Alabama Alabama 2023 5,108,468 101 $62,027 $86,225 1,969,105 402,480 410,073 330,322 246,978 299,530 138,831 140,891 5,054,253 3,225,652 1,310,256 12,974 71,020 1,727 15,533 145,451 271,640 5,054,253 292,913 331,814 329,087 328,298 316,637 330,451 334,908 336,726 306,112 340,964 328,652 309,372 301,761 313,860 300,668 252,030 39 3,448,302 12% 30% 30% 17% 11% 1,274,643 11% 2,342,761 5% 2,316,192 1,969,105 1,377,062 592,043 $195,100 1,969,105 1,274,643 914,778 320,442 359,865 173,085 694,462 50,651 0400000US01 4,447,100 4,779,736 5,024,279 5,124,380 7% 5% 2%
17 Autauga County Alabama 2023 60,342 102 $69,841 $93,367 22,523 3,292 4,606 4,109 3,406 3,440 1,776 1,894 59,285 42,497 11,829 42 599 0 218 1,912 2,188 59,285 3,266 4,264 3,563 3,806 4,421 4,187 3,196 3,913 3,575 3,996 3,625 4,036 3,490 4,064 3,164 2,719 39 40,767 10% 33% 29% 16% 12% 15,674 8% 27,070 3% 24,731 22,523 16,872 5,651 $197,900 22,523 15,674 11,861 5,155 3,813 1,623 6,849 594 0500000US01001 43,671 54,571 58,805 60,327 25% 8% 3%
18 Baldwin County Alabama 2023 253,507 160 $75,019 $100,105 94,642 13,608 18,118 15,585 13,311 17,319 7,537 9,164 239,945 195,347 19,051 608 2,259 78 961 8,248 13,393 239,945 12,310 14,863 12,254 14,214 15,266 15,788 19,242 18,692 13,290 15,819 12,152 14,196 14,089 15,506 15,813 16,451 44 171,988 8% 28% 31% 21% 12% 64,593 7% 113,171 3% 128,518 94,642 73,381 21,261 $287,000 94,642 64,593 53,118 16,692 11,475 5,315 30,049 1,590 0500000US01003 140,415 182,265 231,767 261,777 30% 27% 13%
19 Barbour County Alabama 2023 24,585 28 $44,290 $64,745 9,080 2,842 2,246 1,432 764 1,147 300 349 24,757 10,807 11,611 34 136 0 298 381 1,490 24,757 1,776 1,128 1,210 1,482 1,151 1,509 1,679 1,916 1,288 1,498 1,916 1,770 1,840 1,622 1,596 1,376 41 17,628 22% 38% 29% 7% 5% 5,990 18% 9,074 6% 11,702 9,080 6,128 2,952 $109,900 9,080 5,990 3,572 962 2,418 1,162 3,090 885 0500000US01005 29,038 27,457 25,223 24,288 -5% -8% -4%
20 Bibb County Alabama 2023 21,868 35 $51,215 $67,735 7,571 1,919 1,797 1,215 1,024 1,000 374 242 22,152 16,333 4,585 24 51 0 20 395 744 22,152 1,241 1,107 1,136 1,397 1,295 1,323 1,390 1,439 1,215 1,462 1,637 1,416 2,035 1,779 1,175 1,105 41 15,931 20% 41% 28% 7% 4% 5,264 16% 9,375 10% 9,090 7,571 5,843 1,728 $132,600 7,571 5,264 3,971 1,187 1,293 689 2,307 622 0500000US01007 20,826 22,915 22,293 22,023 10% -3% -1%

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