Lyon County Demographics

A map of Lyon County's Population by Race

Lyon County, Kansas has an estimated population of 32,186, a less than 1% change from the 32,179 recorded in the 2020 Census. The population is 68.3% White, 24.2% Hispanic, 3.9% Multiracial, 1.9% Asian, 1.4% Black, and 0.4% Native American/Other. This demographic dot map shows the population of Lyon County, with one dot drawn for each person counted by the Census, color-coded by race.

Lyon is about as racially diverse as it was in the 2020 Census. It is more diverse than Kansas overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In Lyon County, that probability was 47.0% in 2020 and 47.3% in the most recent ACS estimates.

Lyon County is ranked the 18th most populous county in Kansas, out of 105 counties. Lyon County was ranked the 18th most populous county in the 2020 Census.

Lyon County's White Population

21,973 residents of Lyon County, or 68.3% of the population, identify as White. The share of White residents in Lyon County is slightly lower than in Kansas overall, where 72.7% of the population is White. Lyon County ranks 92nd statewide in terms of White residents as a share of the population, out of 105 counties.

Since the 2020 Census, Lyon County's White population has declined by an estimated 1.1%. White residents' share of Lyon County's population has decreased from 69.0% to 68.3%.

Lyon County is less White than neighboring Chase County (86.3% White), Osage County (92.1% White), Coffey County (91.3% White), Wabaunsee County (89.6% White), and Morris County (90% White).

Lyon County's Black Population

452 residents of Lyon County, or 1.4% of the population, identify as Black. The share of Black residents in Lyon County is slightly lower than in Kansas overall, where 5.2% of the population is Black. Lyon County ranks 26th statewide in terms of Black residents as a share of the population, out of 105 counties.

Since the 2020 Census, Lyon County's Black population has declined by an estimated 24.5%. Black residents' share of Lyon County's population has decreased from 1.9% to 1.4%.

Lyon County is more Black than neighboring Chase County (1.1% Black), Osage County (0.3% Black), Coffey County (0.6% Black), Wabaunsee County (0.2% Black), and Morris County (0% Black).

Lyon County's Asian Population

597 residents of Lyon County, or 1.9% of the population, identify as Asian. The share of Asian residents in Lyon County is comparable to the share in Kansas overall, where 2.9% of the population is Asian. Lyon County ranks 10th statewide in terms of Asian residents as a share of the population, out of 105 counties.

Since the 2020 Census, Lyon County's Asian population has grown by an estimated 5.5%. Asian residents' share of Lyon County's population has remained roughly unchanged at 1.9%.

Lyon County is more Asian than neighboring Chase County (0.5% Asian), Osage County (0.1% Asian), Coffey County (0.9% Asian), Wabaunsee County (0.4% Asian), and Morris County (0.7% Asian).

Lyon County's Hispanic Population

7,780 residents of Lyon County, or 24.2% of the population, identify as Hispanic. The share of Hispanic residents in Lyon County is considerably higher than in Kansas overall, where 13.6% of the population is Hispanic. Lyon County ranks 12th statewide in terms of Hispanic residents as a share of the population, out of 105 counties.

Since the 2020 Census, Lyon County's Hispanic population has grown by an estimated 7.2%. Hispanic residents' share of Lyon County's population has increased from 22.5% to 24.2%.

Lyon County is more Hispanic than neighboring Chase County (8.4% Hispanic), Osage County (3.4% Hispanic), Coffey County (3.9% Hispanic), Wabaunsee County (4.8% Hispanic), and Morris County (4.3% Hispanic).

Lyon County's Native American/Other Population

115 residents of Lyon County, or 0.4% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Lyon County is comparable to the share in Kansas overall, where 0.9% of the population is Native American/Other. Lyon County ranks 25th statewide in terms of Native American/Other residents as a share of the population, out of 105 counties.

Since the 2020 Census, Lyon County's Native American/Other population has declined by an estimated 67.3%. Native American/Other residents' share of Lyon County's population has decreased from 1.1% to 0.4%.

Lyon County is more Native American/Other than neighboring Chase County (0.2% Native American/Other), Coffey County (0.3% Native American/Other), and Morris County (0.1% Native American/Other). Lyon County is less Native American/Other than neighboring Osage County (0.6% Native American/Other), and Wabaunsee County (0.5% Native American/Other).

Lyon County's Multiracial Population

1,269 residents of Lyon County, or 3.9% of the population, identify as Multiracial. The share of Multiracial residents in Lyon County is comparable to the share in Kansas overall, where 4.8% of the population is Multiracial. Lyon County ranks 58th statewide in terms of Multiracial residents as a share of the population, out of 105 counties.

Since the 2020 Census, Lyon County's Multiracial population has grown by an estimated 6.9%. Multiracial residents' share of Lyon County's population has remained roughly unchanged at 3.9%.

Lyon County is more Multiracial than neighboring Chase County (3.5% Multiracial), Osage County (3.5% Multiracial), and Coffey County (3% Multiracial). Lyon County is less Multiracial than neighboring Wabaunsee County (4.5% Multiracial), and Morris County (4.9% Multiracial).

Sources: Most recent population estimates are from the 2020-2024 American Community Survey 5-Year Estimates. 2020 population counts and map data are from 2020 Census State Redistricting Data. Geographic data are from Census TIGER/Line Shapefiles.