• county
  • FIPS 30057
  • Largest town: Ennis

Madison County, Montana

Madison County had 9,753 residents in the Census Vintage 2024 estimate, on 3,588.2 square miles of land. It ranks 24th of 56 in Montana by population and 13th by land area.

Population
9,753
#24 of 56 in Montana · #2,431 in US
Area
3,588.2 sq mi
#13 of 56 in Montana · #140 in US
Density
2.7 / sq mi
#30 of 56 in Montana · #2,930 in US
Median household income
$73,316
#7 of 56 in Montana · #767 in US

Census Vintage 2024 estimates · SAIPE 2023 income · 2024 Gazetteer land area

Madison County within Montana. Pin: Helena.

Measure from here

Tools and pages that start from Madison County

Madison County population, land area and income

Madison County had 9,753 residents in the Census Vintage 2024 estimate, on 3,588.2 square miles of land. It ranks 24th of 56 in Montana by population and 13th by land area. That works out to 2.7 people per square mile, below the US average of 96.3, and in the bottom quarter nationally.

The median county-equivalent in Montana has 7,814 residents; Madison County is somewhat larger.

Its SAIPE 2023 median household income of $73,316 is in the top quarter among 3,143 counties with an estimate.

National rank among 3,144

Population

9,753

3144th1st

2431st of 3,144 (US)

Land area

3,588 sq mi

3144th1st

140th of 3,144 (US)

Density

2.7 / sq mi

3144th1st

2930th of 3,144 (US)

Median household income

$73,316

3143rd1st

767th of 3,143 (US)

Rank within Montana (56)

Population

9,753

56th1st

24th of 56 (MT)

Land area

3,588 sq mi

56th1st

13th of 56 (MT)

Density

2.7 / sq mi

56th1st

30th of 56 (MT)

Median household income

$73,316

56th1st

7th of 56 (MT)

How Madison County's population changed since 2020

Madison County gained 1,092 residents between the July 2020 and July 2024 estimates, a rise of 12.6%. That ranks 4th of 56 in Montana for growth. The median Montana county changed by +2.8%, and the state as a whole by +4.6%.

Since the April 2020 estimates base, Madison County recorded 307 births and 451 deaths, a natural change of -144. Net international migration added +60 and net domestic migration, people moving to or from other US counties, came to +1,208. The largest single component was domestic migration, which added 1,208 people.

8,66120208,95420219,23720229,50920239,7532024
Census Vintage 2024 county estimates for July 1 of each year. The axis starts above zero so year-to-year changes are visible.

Components of change, April 2020 to July 2024

Births
307
Deaths
451
Net international migration
+60
Net domestic migration
+1,208
Change, July 2023 to July 2024
+244

Where Madison County is

The Census internal point of Madison County is at 45.325300, -111.913800. It sits in UTM zone 12N. The map shades Montana's 56 county-equivalents by population change from 2020 to 2024, darker for faster growth, with Madison County outlined. Dots are towns of 1,000+ people with residents in it.

Liberty County: -1.2%Golden Valley County: +5.1%Dawson County: -2.1%Flathead County: +9.2%Beaverhead County: +6.7%Prairie County: +2.0%Garfield County: +0.9%Lewis and Clark County: +5.5%Sweet Grass County: +2.4%Wheatland County: -0.7%Ravalli County: +8.5%Jefferson County: +9.6%Carter County: -0.6%Chouteau County: -0.6%Custer County: +0.9%Teton County: +3.1%Granite County: +9.0%Deer Lodge County: +4.1%Cascade County: +0.1%Powder River County: +2.4%Meagher County: +7.3%Daniels County: -1.7%Glacier County: -1.8%Wibaux County: -2.7%Fallon County: -2.7%McCone County: -0.7%Sheridan County: -2.5%Missoula County: +3.5%Toole County: +3.7%Sanders County: +11.5%Roosevelt County: -5.6%Rosebud County: -1.3%Treasure County: -2.5%Yellowstone County: +3.9%Blaine County: -1.4%Musselshell County: +14.8%Broadwater County: +21.0%Powell County: +2.6%Fergus County: +3.4%Phillips County: +0.1%Gallatin County: +6.2%Silver Bow County: +2.6%Madison County: +12.6%Richland County: -4.4%Lake County: +6.9%Valley County: -1.7%Judith Basin County: +4.3%Hill County: -1.2%Big Horn County: -2.2%Stillwater County: +5.0%Carbon County: +9.4%Mineral County: +13.7%Petroleum County: +4.6%Pondera County: +3.4%Park County: +4.9%Lincoln County: +12.4%
Change 2020 to 2024
  1. < -1.4%
  2. < +0.9%
  3. < +3.9%
  4. < +7.3%
  5. ≥ +7.3%
no data

Orange pin: Madison County internal point. Dark pin: Helena.

Internal point

Decimal
45.325300, -111.913800
DMS
45°19'31.08"N 111°54'49.68"W
UTM
12N 428387.3E 5019494.3N
Geohash
c803v74z5
Plus code
85QC83GP+4F

Towns in Madison County

One incorporated place of 1,000+ people has residents in Madison County, 1,081 people together, or 11% of the county. Each figure counts only the part of the town inside Madison County; towns marked "part" extend into another county. The largest is Ennis with 1,081.

  1. 01Ennis1,081
Census Vintage 2024 subcounty estimates, county parts of incorporated places (SUMLEV 157).

Counties bordering Madison County

The Census 2024 county adjacency file lists 5 neighbors for Madison County, including 1 across a state line. The most populous is Gallatin County, MT, with 126,984 residents. Distances run between Census internal points in a straight line.

Distance to Helena and the nearest big city

Helena is 87.2 miles N of Madison County's internal point in a straight line. The nearest place of 100,000 or more is Billings, MT (population 121,483), 165.7 miles away. The nearest place of 10,000 or more is Belgrade, MT (population 12,741), 47.5 miles away.

Madison County FIPS code

The FIPS code of Madison County is 30057: state code 30 for Montana plus county code 057. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $73,316.

Questions people ask

What is the population of Madison County, Montana?

The Census Vintage 2024 estimate for July 1, 2024 is 9,753. That is up 1,092 people (12.6%) from the July 2020 estimate of 8,661.

What is the FIPS code of Madison County?

30057. The first two digits (30) are Montana; the last three (057) identify the county.

What is the largest town in Madison County?

Ennis, with 1,081 residents inside Madison County in 2024.

Which counties border Madison County?

5 county-equivalents border it in the Census 2024 adjacency file: Gallatin County, MT; Silver Bow County, MT; Fremont County, ID; Jefferson County, MT; Beaverhead County, MT.

Sources and data as of

Data as of: Census Vintage 2024 population estimates, 2024 Gazetteer land area and internal points, SAIPE 2023 median household income.

  1. 01Census Vintage 2024 county population estimates
  2. 02Census 2024 Gazetteer, counties
  3. 03Census SAIPE 2023 state and county estimates
  4. 04Census Vintage 2024 subcounty population estimates
  5. 05Census 2024 county adjacency file
  6. 06Census 2024 cartographic boundary file, counties (1:5,000,000)

How every number is computed: methodology. Spotted a wrong figure? Report an error.