County · Louisiana
Assumption Parish, Louisiana
Assumption Parish, Louisiana. Assumption Parish had 19,720 residents in 2025 by the Census Bureau's estimate, down 6.3% since 2020, a steeper fall than Louisiana's (−0.9%). It holds 8 places (1 city, village or borough and 7 census-designated) and 7 census tracts. GEOID 22007.
Assumption Parish is one of the 10 counties of the Baton Rouge, LA metropolitan statistical area (the Census Bureau's July 2023 delineation).
Residents, July 2025 estimate
19,720
Census Bureau estimate (no margin published)
2020 Census count: 21,039 · ACS 2020-2024: 20,484
Median household income
$51,423
±$5,497 (90% margin)
Louisiana: $60,756
Median home value
$150,300
±$22,891 (90% margin)
Louisiana: $216,500
Median gross rent
$810
±$64 (90% margin)
Louisiana: $1,064
How many people live in Assumption Parish, and is it growing?
The 2020 Census counted 21,039 residents in Assumption Parish. The Census Bureau estimates 19,720 for July 1, 2025, down 6.3% since 2020, a steeper fall than Louisiana's (−0.9%). The 2020-2024 American Community Survey puts the population at 20,484 over 344 square miles of land.
| Measure | Assumption Parish | Louisiana | Change since 2015-2019 |
|---|---|---|---|
| Total population | 20,484 | 4,611,961 | −1,994 |
| Households | 8,830±250 | 1,804,780 | no clear change |
| Average household size | 2.30±0.07 | 2.49 | −0.30 |
| Housing units | 10,066±18 | 2,108,902 | −739 |
Assumption Parish's population since 2000
From 23,388 in 2000 to 19,720 in 2025: down 15.7%. The 2000, 2010 and 2020 figures are census counts. The 2005 figure is the Census Bureau's intercensal estimate, revised to fit the 2000 and 2010 counts and drawn on 2010 boundaries; 2015 and 2025 are July 1 estimates made from the census before them.
Source: The 2000, 2010 and 2020 Census counts and the Census Bureau's population estimates (intercensal 2000-2010, Vintage 2020, Vintage 2025) · Census population estimates
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); PEP Vintage 2025 (CO-EST2025); 2020 Census · Check it at data.census.gov
What cities and towns are in Assumption Parish?
Assumption Parish holds 8 places: 1 city, village or borough (an incorporated place) and 7 census-designated places. The largest is Pierre Part with 2,308 residents (2020-2024). Places that cross a county line are listed with the share of their 2020 residents who live in this county.
| Pierre Part | 3,024 | $60,144 |
|---|---|---|
| Bayou L'Ourse | 1,806 | $60,219 |
| Labadieville | 1,715 | $48,056 |
| Belle RoseGEOID 2206260 | 1,698 | $60,976 |
| PaincourtvilleGEOID 2258745 | 857 | not published |
| SupremeGEOID 2274235 | 839 | $29,760 |
| NapoleonvilleGEOID 2253370 | 540 | not published |
| Bayou CorneGEOID 2205255 | 32 | not published |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 place-by-county parts · Check it at data.census.gov
Who lives in Assumption Parish?
The median resident of Assumption Parish is 42.8 years old; 20.4% are under 18 and 20.3% are 65 or older. The largest group is non-Hispanic white residents at 63.9%, then non-Hispanic Black residents at 27.7%.
| Measure | Assumption Parish | Louisiana | Change since 2015-2019 |
|---|---|---|---|
| Median age | 42.8±2.1 | 38.0 | no clear change |
| Under 18 years | 20.4%±0.2 pts | 23.5% | – |
| 65 years and over | 20.3%±0.3 pts | 16.7% | – |
| Hispanic or Latino (any race) | 4.3% | 7.2% | +1.3 pts |
| White alone, not Hispanic | 63.9%±0.6 pts | 55.7% | −1.7 pts |
| Black or African American alone, not Hispanic | 27.7%±1.7 pts | 30.5% | −2.2 pts |
| Asian alone, not Hispanic | 0.9%±1.1 pts | 1.7% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.7%±0.2 pts | 0.4% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0%±0.2 pts | 0.1% | – |
| Two or more races, not Hispanic | 2.4%±1.3 pts | 3.8% | – |
| Some other race alone, not Hispanic | 0.1%±0.2 pts | 0.5% | – |
| Born outside the United States | 2.4%±1.6 pts | 4.9% | – |
| Speak a language other than English at home (age 5+) | 9.4%±2.0 pts | 8.5% | – |
| Civilian veterans (age 18+) | 4.9%±1.3 pts | 6.1% | – |
| With a disability | 17.4%±2.3 pts | 16.3% | – |
| No health insurance coverage | 8.6%±1.7 pts | 7.8% | no clear change |
| High school graduate or higher (age 25+) | 79.9%±2.7 pts | 87.3% | – |
| Bachelor's degree or higher (age 25+) | 13.8%±2.5 pts | 27.0% | +4.2 pts |
| Graduate or professional degree (age 25+) | 4.4%±1.3 pts | 10.1% | – |
| Moved from another state in the past year | 0.0%±0.2 pts | 1.6% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profiles DP02, DP05) · Check it at data.census.gov
What do households in Assumption Parish earn?
Half of Assumption Parish's 8,830 households earn less than $51,423 a year (±$5,497), against $60,756 in Louisiana. In 2015-2019 it was $53,854 in 2024 dollars; the margins of error cannot tell the two periods apart. 15.3% of residents live below the poverty line.
| Measure | Assumption Parish | Louisiana | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $51,423±$5,497 | $60,756 | no clear change |
| Mean household income | $76,369±$6,601 | $87,038 | – |
| Per capita income | $31,516±$2,118 | $35,038 | no clear change |
| People below the poverty line | 15.3%±2.9 pts | 18.9% | no clear change |
| Children under 18 below the poverty line | 15.0%±6.0 pts | 25.4% | −12.2 pts |
| Households receiving SNAP | 19.9%±3.7 pts | 17.3% | – |
| Households with a broadband subscription | 83.9%±3.1 pts | 86.6% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What does housing cost in Assumption Parish?
Owners occupy 84.8% of Assumption Parish's occupied homes and renters 15.2%. The median owner-occupied home is valued at $150,300 by its owner (±$22,891). The median renter pays $810 a month including utilities, and 53.3% of renters pay 35% or more of their income on rent.
| Measure | Assumption Parish | Louisiana | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $150,300±$22,891 | $216,500 | no clear change |
| Median gross rent | $810±$64 | $1,064 | −$171 |
| Renters paying 35% or more of income on rent | 53.3%±14.7 pts | 46.3% | no clear change |
| Median monthly owner costs, with a mortgage | $1,460±$86 | $1,604 | – |
| Owner-occupied homes | 84.8%±3.1 pts | 67.4% | +6.7 pts |
| Housing units | 10,066±18 | 2,108,902 | −739 |
| Homeowner vacancy rate | 0.9%±0.8 pts | 1.3% | – |
| Rental vacancy rate | 0.4%±0.7 pts | 7.8% | – |
| Single-family detached homes | 63.2%±4.1 pts | 65.3% | – |
| Mobile homes | 31.8%±4.0 pts | 12.6% | – |
| Built 2020 or later | 1.3%±0.9 pts | 1.8% | – |
| Built 1939 or earlier | 6.3%±1.9 pts | 6.1% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP04) · Check it at data.census.gov
How many new homes is Assumption Parish building?
Builders took permits for 38 new housing units across Assumption Parish in 2025 (30 single-family), 1.9 per 1,000 residents.
Source: Building Permits Survey, annual county files 2019-2025, U.S. Census Bureau · Census Building Permits Survey
How do people in Assumption Parish get to work?
84.8% of Assumption Parish's workers drive alone and 4.3% work from home. The average trip to work takes 29.2 minutes. The unemployment rate in 2020-2024 averaged 4.8%.
| Measure | Assumption Parish | Louisiana | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 54.9%±3.0 pts | 59.3% | – |
| Unemployment rate | 4.8%±1.7 pts | 6.3% | no clear change |
| Drove alone to work | 84.8%±3.3 pts | 78.6% | – |
| Carpooled | 8.3%±2.8 pts | 8.7% | – |
| Public transportation | 0.9%±0.9 pts | 0.9% | – |
| Walked | 1.3%±0.9 pts | 1.8% | – |
| Worked from home | 4.3%±1.6 pts | 8.1% | no clear change |
| Mean travel time to work | 29.2 min±2.2 | 25.7 min | no clear change |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What are Assumption Parish's census tracts?
Assumption Parish is divided into 7 census tracts. Among those with a reliable estimate, median household income runs from $43,731 (Tract 501) to $60,444 (Tract 503).
| Tract 50122007050100 | 3,293±530 | $43,731 |
|---|---|---|
| Tract 502.0122007050201 | 2,672±374 | $51,813 |
| Tract 502.0222007050202 | 1,871±263 | $51,167 |
| Tract 50322007050300 | 3,459±566 | $60,444 |
| Tract 50422007050400 | 2,748±395 | $57,520 |
| Tract 50522007050500 | 2,657±520 | $48,125 |
| Tract 50622007050600 | 3,784±515 | $53,190 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) · Check it at data.census.gov
How does Assumption Parish compare with Louisiana's other counties?
| Measure | Rank |
|---|---|
| Population | 43rd of 64 |
| Growth 2020-2025 | 57th of 64 |
| Residents per square mile | 29th of 64 |
| Median household income | 36th of 64 |
| Median home value | 38th of 64 |
| Median gross rent | 41st of 64 |
| Poverty rate | 51st of 64 |
| Bachelor's degree or higher | 50th of 64 |
| Median age | 8th of 64 |
Source: PlainCities ranks from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) and PEP Vintage 2025 · How ranks are computed
How these figures are made: methodology and release checks · reading a margin of error · every state · corrections
Not on this page: crime, weather and schools for Assumption Parish are other agencies' records. Crime: the FBI's Crime Data Explorer · climate: NOAA's U.S. Climate Normals · schools: the National Center for Education Statistics' school search.