United States › Montana › Sidney CITY
Sidney Montana · 6,217 residents (2025 est.) · 3.29 sq mi
Time machine
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The short version
With 6,171 people, Sidney is a city in Montana. 22% of adults hold a bachelor's degree, below the 36% national rate. The foreign-born share is 3%. Growth has run 29% since 2000, or 1,397 more people. There are 1,877 people per square mile. Home values have more than tripled since 2000, reaching $236,900.
At a glance
Lower income
below the US median
US median: $82,259
Younger
median age 37.3
US median: 38.9
Less educated
22% hold a bachelor's degree
US average: 36%
Less affordable
home values up 117%, inflation adjusted
US median home: $376,019
Section 01
Population & growth from 4,774 in 2000
6,217 in 2025 (Census Bureau estimate)
1,877 / sq mi
+31%since 2009
from 1,435 / sq mi in 2009
US average: 281
from 39.1 in 2000
US average: 38.9
Population, 1990 – 2024
5K 5K 6K 6K 7K 1990 2000 2010 2020 2024 Sidney Age distribution, 2024
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 02
Income & economy $62,538
+7%inflation adjusted, since 2000
from $32,109 in 2000
US average: $82,259
from $16,911 in 2000
US average: $44,673
Households earning $100K+
from 23.6% in 2009
US average: 53.3%
from 12.7% in 2000
US average: 12.5%
from 0.417 in 2010
US average: 0.476
Workforce by industry, 2024
Agriculture, forestry, fishing 10.8%
Professional, scientific, technical 7.5%
Transportation & warehousing 5.6%
Education & health services 1.1%
Arts, entertainment, food 0.8%
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$236,900
+117%inflation adjusted, since 2000
from $60,000 in 2000
US average: $376,019
$931
+48%inflation adjusted, since 2000
from $346 in 2000
US average: $1,442
from 66.5% in 2000
42.4% rent
from 7.2% in 2009
US average: 10.0%
2.44 people
+17%since 2009
from 2.08 people in 2009
US average: 2.54
from 19.0% in 2009
US average: 22.9%
from 44.7% in 2009
US average: 47.4%
from 1.8 in 2009
Years of local income it takes to buy a local home, on a scale of about 0 to 15. Lower is more affordable.
Our index, 0 to 100. Higher means faster recent growth in incomes, home values, and college degrees.
Section 04
Race & ethnicity 2000
White, non-Hispanic 94.5%(4,511)
Hispanic / Latino 2.4%(116)
2024
White, non-Hispanic 83.8%(5,172)
from 15 in 2009
Our index, 0 to 100. Higher means a more even mix of racial and ethnic groups.
Section 04 · Origins
Detailed origins & ancestry Ancestry
+ 12 more ancestry groups with data from 16.1% in 2000
US average: 35.6%
High school or higher
from 84.0% in 2000
US average: 89.6%
from 2.8% in 2000
US average: 14.0%
Section 06
Commute & transportation from 10.8 min in 2000
US average: 26.5
from 71.9% in 2009
US average: 68.9%
from 13.2% in 2009
US average: 8.5%
from 6.8% in 2009
US average: 3.2%
from 0.0% in 2009
US average: 15.0%
from 5.8% in 2009
US average: 2.4%
from 1.2% in 2009
US average: 0.4%
from 5.4% in 2009
US average: 8.3%
Section 07
Work & employment from 4.4% in 2011
US average: 5.2%
from 69.3% in 2011
US average: 63.5%
Women 20-64 in the labor force
from 79.9% in 2020
US average: 74.6%
from 28.6% in 2009
US average: 13.1%
from 23.2% in 2009
US average: 42.5%
Section 08
People & community from 1.9% in 2009
US average: 14.1%
from 12.3% in 2009
US average: 6.2%
from 12.5% in 2012
US average: 13.3%
from 20.6% in 2013
US average: 8.4%
from 73.5% in 2017
US average: 91.0%
Computer in household
from 88.1% in 2020
US average: 95.5%
from 84.5% in 2020
US average: 87.7%
from 92.8% in 2016
US average: 77.7%
from 6.3% in 2016
US average: 13.6%
Marital status
SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2024
Section 09
Health coverage from 20.6% in 2013
US average: 8.4%
from 65.5% in 2020
US average: 54.8%
Direct-purchase
from 11.4% in 2020
US average: 13.8%
from 13.7% in 2020
US average: 18.4%
from 19.6% in 2020
US average: 20.9%
VA health care
from 2.5% in 2020
US average: 2.2%
Any private
from 74.4% in 2020
US average: 67.1%
Any public
from 31.1% in 2020
US average: 36.7%
Shares are "alone or in combination": a person with both Medicare and Medicaid counts in each, so categories overlap and do not sum to 100%.
Section 09 · Service history
Veterans Veterans by period of service, 2024
Gulf War (2001 or later) 38.7%(87)
Gulf War (1990s) 37.8%(85)
Share of the 225 veterans here. A veteran who served across eras counts in each, so shares can total more than 100%. Peacetime-only service is included in the total but not shown as an era.
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Places similar to Sidney Head to head
Compare Sidney to nearby cities Frequently asked
How many people live in Sidney, Montana? Sidney, Montana has about 6,171 residents according to the 2024 American Community Survey.
What is the median household income in Sidney, Montana? The typical household in Sidney, Montana earns about $62,538 a year. Half of households make more than that, and half make less.
Is Sidney, Montana expensive? In Sidney, Montana, the median home is worth about $236,900, and the typical rent is about $931 a month.
How educated are people in Sidney, Montana? About 22.0% of adults age 25 and over in Sidney, Montana hold a bachelor's degree or higher.
What is the poverty rate in Sidney, Montana? About 7.7% of people in Sidney, Montana live below the federal poverty line.
Has Sidney, Montana grown since 1990? Yes, Sidney, Montana has grown since 1990. The population has added about 954 residents, a change of about 18 percent over that period.
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