Niobrara County Demographics

A map of Niobrara County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	2,059	2,255	87.0%	91.4%
Hispanic	133	76	5.6%	3.1%
Black	82	6	3.5%	0.2%
Native American/Other	52	32	2.2%	1.3%
Multiracial	42	86	1.8%	3.5%
Asian	0	12	0.0%	0.5%

Niobrara County, Wyoming has an estimated population of 2,368, a decrease from the 2,467 recorded in the 2020 Census. The population is 87.0% White, 5.6% Hispanic, 3.5% Black, 2.2% Native American/Other, 1.8% Multiracial, and 0.0% Asian. This demographic dot map shows the population of Niobrara County, with one dot drawn for each person counted by the Census, color-coded by race.

Niobrara has become considerably more racially diverse since the 2020 Census. It is considerably less diverse than Wyoming overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In Niobrara County, that probability was 16.2% in 2020 and 23.9% in the most recent ACS estimates.

Niobrara County is ranked the 23rd most populous county in Wyoming, out of 23 counties. Niobrara County was ranked the 23rd most populous county in the 2020 Census.

Niobrara County's White Population

2,059 residents of Niobrara County, or 87.0% of the population, identify as White. The share of White residents in Niobrara County is higher than in Wyoming overall, where 81.4% of the population is White. Niobrara County ranks 2nd statewide in terms of White residents as a share of the population, out of 23 counties.

Since the 2020 Census, Niobrara County's White population has declined by an estimated 8.7%. White residents' share of Niobrara County's population has decreased from 91.4% to 87.0%.

Niobrara County is more White than neighboring Weston County (85.2% White), Fall River County (83.9% White), and Goshen County (84.5% White). Niobrara County is less White than neighboring Sioux County (95.5% White), and Converse County (87.2% White).

Niobrara County's Black Population

82 residents of Niobrara County, or 3.5% of the population, identify as Black. The share of Black residents in Niobrara County is slightly higher than in Wyoming overall, where 0.8% of the population is Black. Niobrara County ranks 14th statewide in terms of Black residents as a share of the population, out of 23 counties.

Since the 2020 Census, Niobrara County's Black population has grown by an estimated 1266.7%. Black residents' share of Niobrara County's population has increased from 0.2% to 3.5%.

Niobrara County is more Black than neighboring Weston County (0% Black), Sioux County (0.1% Black), Fall River County (0% Black), Goshen County (0.2% Black), and Converse County (0.6% Black).

Niobrara County's Asian Population

0 residents of Niobrara County, or 0.0% of the population, identify as Asian. The share of Asian residents in Niobrara County is comparable to the share in Wyoming overall, where 0.8% of the population is Asian. Niobrara County ranks 15th statewide in terms of Asian residents as a share of the population, out of 23 counties.

Since the 2020 Census, Niobrara County's Asian population has declined by an estimated 100.0%. Asian residents' share of Niobrara County's population has decreased from 0.5% to 0.0%.

Niobrara County is less Asian than neighboring Weston County (0.5% Asian), Sioux County (0.2% Asian), Fall River County (1.9% Asian), Goshen County (0.6% Asian), and Converse County (0.2% Asian).

Niobrara County's Hispanic Population

133 residents of Niobrara County, or 5.6% of the population, identify as Hispanic. The share of Hispanic residents in Niobrara County is lower than in Wyoming overall, where 10.7% of the population is Hispanic. Niobrara County ranks 22nd statewide in terms of Hispanic residents as a share of the population, out of 23 counties.

Since the 2020 Census, Niobrara County's Hispanic population has grown by an estimated 75.0%. Hispanic residents' share of Niobrara County's population has increased from 3.1% to 5.6%.

Niobrara County is more Hispanic than neighboring Weston County (5.3% Hispanic), Sioux County (2.1% Hispanic), and Fall River County (3.4% Hispanic). Niobrara County is less Hispanic than neighboring Goshen County (10.2% Hispanic), and Converse County (8.2% Hispanic).

Niobrara County's Native American/Other Population

52 residents of Niobrara County, or 2.2% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Niobrara County is comparable to the share in Wyoming overall, where 2.4% of the population is Native American/Other. Niobrara County ranks 9th statewide in terms of Native American/Other residents as a share of the population, out of 23 counties.

Since the 2020 Census, Niobrara County's Native American/Other population has grown by an estimated 62.5%. Native American/Other residents' share of Niobrara County's population has increased from 1.3% to 2.2%.

Niobrara County is more Native American/Other than neighboring Sioux County (0.6% Native American/Other), Goshen County (1.3% Native American/Other), and Converse County (0% Native American/Other). Niobrara County is less Native American/Other than neighboring Weston County (2.3% Native American/Other), and Fall River County (6% Native American/Other).

Niobrara County's Multiracial Population

42 residents of Niobrara County, or 1.8% of the population, identify as Multiracial. The share of Multiracial residents in Niobrara County is slightly lower than in Wyoming overall, where 4% of the population is Multiracial. Niobrara County ranks 13th statewide in terms of Multiracial residents as a share of the population, out of 23 counties.

Since the 2020 Census, Niobrara County's Multiracial population has declined by an estimated 51.2%. Multiracial residents' share of Niobrara County's population has decreased from 3.5% to 1.8%.

Niobrara County is more Multiracial than neighboring Sioux County (1.5% Multiracial). Niobrara County is less Multiracial than neighboring Weston County (6.7% Multiracial), Fall River County (4.7% Multiracial), Goshen County (3.2% Multiracial), and Converse County (3.8% 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.