Jefferson County, Idaho: commercial real estate data.
Jefferson County, Idaho had an estimated 34,854 residents on July 1, 2024, up 12.8 percent since the 2020 census base of 30,891, across 1,094 square miles. County output reached $1.37 bn in 2024, 739 establishments operate here, and the SBA record carries 57 7(a) approvals worth $10.5 m since FY2020.
Underlined figures are computed by MMCG Analytics, not published by the agency.
Jefferson County
How many people live in Jefferson County
- Population, American Community Survey 2020-202433,154
- Households10,199
- Average household size3.25
- Median household income$86,679
- Median age32.8
- Median gross rent$1,138 per month
- Median owner-occupied home value$408,400
- Home value to household income4.7 times
- Annual rent as a share of median income15.8 percent
- Adults 25 and over with a bachelor degree or higher27.4 percent
- Adults 25 and over with a graduate degree8.4 percent
- Adults 25 and over19,538
- Population under 1810,724
- Share under 1832.3 percent
- Population 65 and over3,954
- Share 65 and over11.9 percent
- Working age population, 18 to 6418,476
- Civilian labor force15,752
- Unemployment rate2.7 percent
- Labor force participation, adults 18 and over70.2 percent
- Rank by population among Idaho counties12th of 44
- Rank by population among US county-equivalents, Puerto Rico included1390th of 3,222
Jefferson County is the 12th largest of 44 Idaho counties by population. A median home costs 4.7 times median household income, which is seriously unaffordable by national standards. Residents under 18 outnumber those 65 and over, at 32.3 percent against 11.9 percent, a household formation profile rather than a retirement one.
US Census Bureau, American Community Survey 5-Year Estimates, 2020-2024 5-year.
Jefferson County
Is Jefferson County's population growing?
- Population, July 1, 202434,854
- Census 2020 base population30,891
- Population change since the 2020 census base12.83 percent
- Population change, 2023 to 2024595
- Births, 2024473
- Deaths, 2024223
- Natural change, 2024250
- Net domestic migration, 2024281
- Net international migration, 202469
- Total net migration, 2024350
- Cumulative net domestic migration, 2021 to 20242,733
- Rank by growth among US county-equivalents92nd of 3,144
The county has grown 12.83 percent since the 2020 census base. The population grew in 2024 from both sources: births exceeded deaths and more people moved in than left.
US Census Bureau, Population Estimates Program, Vintage 2024, Vintage 2024, estimates 2020 to 2024.
Jefferson County
Where are people moving to Jefferson County from?
- Tax returns filed by households arriving1,099
- People arriving, from those returns2,613
- Tax returns filed by households leaving928
- Net household movement171
- Adjusted gross income arriving$77.9 m
- Net adjusted gross income movement$26.0 m
- Average income of an arriving household$70,904
- Average income of a leaving household$55,927
- Largest single originBonneville County (392 households)
- Largest single destinationBonneville County (314 households)
| Origin | Households | People | Adjusted gross income |
|---|---|---|---|
| Bonneville County | 392 | 943 | $27.4 m |
| Madison County | 147 | 335 | $7.0 m |
| Bingham County | 28 | 67 | $1.5 m |
| Fremont County | 28 | 54 | $1.5 m |
| Salt Lake County | 28 | 61 | $2.2 m |
| Bannock County | 24 | 55 | $1.3 m |
| Utah County | 22 | 73 | $1.7 m |
Households arriving report $14,977 more average income than households leaving, so the migration is raising local spending power rather than just moving it around. The largest single source of arrivals is Bonneville County, which is the catchment a retail or multifamily study should look at first.
US Internal Revenue Service, Statistics of Income county migration flows, 2021 to 2022 filing years.
Jefferson County
What is the Jefferson County economy?
- County GDP, 2024$1.37 bn
- County GDP, 2023$1.35 bn
- GDP change, 2023 to 20241.3 percent
- GDP change over five years45.1 percent
- Rank by GDP among the Idaho areas BEA publishes18th of 44
- Rank by GDP among the US county areas BEA publishes1584th of 3,127
- GDP per resident$41,195
Output grew 1.3 percent in the latest year and 45.1 percent over five, which is the trend line a lender will read behind any single year figure.
US Bureau of Economic Analysis, Regional, table CAGDP2, CAGDP2, through 2024.
Jefferson County
Employment by industry in Jefferson County
- Covered employment, annual average9,658
- Establishments reporting1,180
- Average annual pay$46,365
- Average weekly wage$892
- Health care and social assistance, employment2,100
- Health care and social assistance, average annual pay$50,538
- Construction, employment1,250
- Construction, average annual pay$53,088
- Manufacturing, employment1,132
- Manufacturing, average annual pay$58,495
- Agriculture, forestry, fishing and hunting, employment861
- Agriculture, forestry, fishing and hunting, average annual pay$45,689
- Retail trade, employment687
- Accommodation and food services, employment400
| Sector | Employment | Establishments | Average annual pay |
|---|---|---|---|
| Health care and social assistance | 2,100 | 121 | $50,538 |
| Construction | 1,250 | 256 | $53,088 |
| Manufacturing | 1,132 | 50 | $58,495 |
| Agriculture, forestry, fishing and hunting | 861 | 95 | $45,689 |
| Retail trade | 687 | 67 | $35,408 |
| Accommodation and food services | 400 | 55 | $13,836 |
| Wholesale trade | 395 | 54 | $56,639 |
| Professional, scientific and technical services | 198 | 94 | $66,462 |
Health care and social assistance is the largest private sector at 2,100 jobs, 21.7 percent of covered employment.
US Bureau of Labor Statistics, Quarterly Census of Employment and Wages, 2024 annual averages.
Jefferson County
How many businesses are in Jefferson County?
- Establishments, all industries739
- Employment at those establishments5,599
- Annual payroll$230.6 m
- Establishments per 1,000 residents22.3
These are counts of establishments physically operating in the county, not listings, so they are the supply side a feasibility study measures demand against. County Business Patterns counts private establishments with paid employees in March 2023, while the Quarterly Census of Employment and Wages above counts every unemployment-insured employer, public ones included, as a 2024 annual average, so the two establishment and employment counts differ.
US Census Bureau, County Business Patterns, 2023.
Jefferson County
Building permits in Jefferson County
- Housing units authorized by permit, 2024281
- Declared construction value permitted$76.0 m
- Single family units authorized281
- Multifamily units authorized0
- Multifamily share of units0.0 percent
- Average declared value per unit$270,587
- Units authorized per 1,000 households27.6
Single-family homes are 100.0 percent of units authorized, so the pipeline is predominantly single-family.
US Census Bureau, Building Permits Survey, 2024 annual.
Jefferson County
SBA loans in Jefferson County (7(a) and 504)
- 7(a) approvals recorded57
- 7(a) gross approval dollars$10.5 m
- Average 7(a) approval$184,333
- Median 7(a) approval$85,000
- 10th percentile approval$21,180
- 90th percentile approval$422,400
- Largest single approval$2,544,000
- Jobs reported supported, 7(a)356
- Jobs per approval6.2
- Distinct 7(a) lenders active11
- Distinct industries receiving approvals38
- Median 7(a) term120 months
- Share of loans on real estate terms, 240 months or longer5.3 percent
- Loans on real estate terms3
- Loans on working capital terms, 120 months or shorter54
- Franchise loans2
- Franchise share of approvals3.5 percent
- Most active lenderZions Bank, A Division of (26)
- 504 approvals recorded31
- 504 gross approval dollars$18.5 m
- Average 504 approval$596,935
- Median 504 approval$390,000
- Distinct CDCs active4
- 504 jobs per approval8.1
- 504 jobs per million dollars approved13.6
- Most active CDCEast-Central Idaho Development Company (21)
- Combined SBA approval dollars, 7(a) FY2020 to FY2026 and 504 FY2010 to FY2026$29.0 m
The average approval of $184,333 sits well above the median of $85,000, pulled up by a few larger deals, so the median is the better guide to what a typical borrower here gets. Only 5.3 percent of approvals run on real estate terms, so SBA credit here is mostly working capital and equipment rather than property acquisition.
US Small Business Administration, 7(a) FOIA release, FY2020 to FY2026 year to date, as of 2026-06-30. US Small Business Administration, 504 FOIA release, FY2010 to FY2026 year to date, as of 2026-06-30.
Jefferson County
SBA loan default and charge-off rates in Jefferson County
Do SBA loans in Jefferson County get paid back?
- Loans with a final outcome recorded7
- Paid in full7
- Charged off0
- Status: Paid in full7
- Status: Exempt from disclosure43
- Status: Cancelled5
- Status: Committed, not yet disbursed2
Only 7 loans have reached a final outcome, fewer than the 30 a charge-off rate needs, so no rate is published.
Compare against the national and state SBA charge-off rates, computed the same way over resolved loans only.
US Small Business Administration, 7(a) FOIA release, FY2020 to FY2026 year to date, as of 2026-06-30.
Jefferson County
SBA lending by place in Jefferson County
- Borrower cities with recorded lending5
- Rigby, approvals44
- Roberts, approvals8
- Menan, approvals3
- Hamer, approvals1
- Terreton, approvals1
| Borrower city | Approvals | Gross approval dollars |
|---|---|---|
| Rigby | 44 | $8,204,100 |
| Roberts | 8 | $708,800 |
| Menan | 3 | $700,600 |
| Hamer | 1 | $673,000 |
| Terreton | 1 | $220,500 |
Rigby accounts for 44 approvals against 8 in Roberts. County level figures average over that gap, which is why a site decision is made at the submarket rather than the county.
US Small Business Administration, 7(a) FOIA release, FY2020 to FY2026 year to date, as of 2026-06-30.
Jefferson County
How large is Jefferson County?
- Land area1,094 sq mi
- Rank by land area among Idaho counties28th of 44
- Width, east to west53.4 mi
- Height, north to south30.1 mi
- Geographies sharing a boundary6
- Residents per square mile of land30
- Establishments per square mile0.68
US Census Bureau county boundary geometry, TIGER, adjacency computed from shared boundary vertices, TIGER county boundaries. US Census Bureau, American Community Survey 5-Year Estimates, 2020-2024 5-year. US Census Bureau, County Business Patterns, 2023.
Jefferson County
Flood risk in Jefferson County
- Participation of the county's own NFIP community Jefferson County, unincorporated areasParticipating, community 160214
- Communities in the county in the NFIP Community Status Book4
- Of those, participating in the NFIP2
- NFIP participation rate50.0 percent
- Communities carrying a CRS class0
- Radon levels in Jefferson County, EPA zone predicted average indoor radon screening level from 2 to 4 pCi/LZone 2
The county's own community in the status book, unincorporated Jefferson County (community 160214), participates in the National Flood Insurance Program and carries no Community Rating System class, so no CRS premium discount applies there. The EPA places Jefferson County in radon zone 2, a predicted average indoor radon screening level from 2 to 4 pCi/L. The zone is a screening prediction for the county and does not substitute for a test at an address. 50.0 percent of the county's listed communities participate in the National Flood Insurance Program, per Federal Emergency Management Agency, NFIP Community Status Book (OpenFEMA), as of 2026-09-26.
Federal Emergency Management Agency, NFIP Community Status Book (OpenFEMA), as of 2026-09-26. US EPA, Map of Radon Zones, county spreadsheet, 2024-05 publication, EPA 402/A-16/001.
Coverage
What this page does not hold.
Traffic counts, zoning and the flood zone at an address are not on this page; they resolve at the address in the platform. How this page was built →
Feasibility studies
When a Jefferson County site needs a document a lender will accept.
The same data layer behind this page is the one the studies are written from. A study for a Jefferson County site starts with the figures you are reading, carrying the same source and period into the credit file.
- Population, American Community Survey 2020-202433,154
- Households10,199
- Average household size3.25
- Median household income$86,679
- Median age32.8
Common questions
Jefferson County questions, answered from the record.
How many people live in Jefferson County, Idaho?
The Census Bureau estimates 34,854 residents on July 1, 2024 (US Census Bureau, Population Estimates Program, Vintage 2024). The American Community Survey 2020-2024 five-year estimate is 33,154, in 10,199 households, ranking 12th of 44 Idaho counties. Source: US Census Bureau, American Community Survey 5-Year Estimates, 2020-2024 5-year.
Is Jefferson County's population growing?
The population has grown 12.83 percent since the 2020 census base of 30,891, to 34,854 on July 1, 2024. In 2024 there were 473 births against 223 deaths, with net migration of 350. Source: US Census Bureau, Population Estimates Program, Vintage 2024, Vintage 2024, estimates 2020 to 2024.
What is the median household income in Jefferson County?
$86,679. The median owner-occupied home is valued at $408,400, which is 4.7 times income, and median gross rent is $1,138 per month. Source: US Census Bureau, American Community Survey 5-Year Estimates, 2020-2024 5-year.
How many businesses are in Jefferson County?
739 establishments, employing 5,599 people with an annual payroll of $230.6 m. These are establishments physically operating in the county, not listings. Source: US Census Bureau, County Business Patterns, 2023.
What is employment by industry in Jefferson County?
Health care and social assistance is the largest private sector at 2,100 jobs, 21.7 percent of covered employment. Covered employment averages 9,658 jobs at an average annual pay of $46,365, or $892 a week. Source: US Bureau of Labor Statistics, Quarterly Census of Employment and Wages, 2024 annual averages.
How much SBA lending happens in Jefferson County?
57 7(a) approvals totaling $10.5 m since FY2020, across 11 lenders, with a median approval of $85,000, plus 31 504 approvals worth $18.5 m since FY2010. These are approvals recorded in the release, not loans disbursed.
How many building permits were issued in Jefferson County?
281 housing units were authorized by permit in 2024, with a declared construction value of $76.0 m. Multifamily was 0.0 percent of units. Source: US Census Bureau, Building Permits Survey, 2024 annual.
What is the radon zone for Jefferson County?
Zone 2, a predicted average indoor radon screening level from 2 to 4 pCi/L. Source: US EPA, Map of Radon Zones, county spreadsheet, 2024-05 publication, EPA 402/A-16/001.
Where do people moving to Jefferson County come from?
The largest single origin is Bonneville County, with 392 households. Arriving households report an average income of $70,904 against $55,927 for those leaving. Source: US Internal Revenue Service, Statistics of Income county migration flows, 2021 to 2022 filing years.
Are traffic counts available for Jefferson County on this page?
No. Annual average daily traffic resolves in the platform rather than in this dataset, so no AADT figure is printed here. It is a gap we know about rather than a figure we estimated.
Is zoning published for Jefferson County?
No. Nothing on this page presents parcel level zoning, and where a statutory framework applies it is marked as the statewide frame, to be confirmed locally.
Jefferson County
Cities and places in Jefferson.
7 Census places lie wholly or partly in Jefferson County. All 7 carry enough published place level data for a page of their own and are linked.
| Place | Type | Population | SBA 7(a) approvals, projects in this county | Lies in |
|---|---|---|---|---|
| Rigby | city | 5,404 | 44 | Wholly in this county |
| Ririe | city | 1,079 | None recorded | 94.2 percent here, 5.8 percent Bonneville County |
| Menan | city | 876 | 3 | Wholly in this county |
| Roberts | city | 609 | 8 | Wholly in this county |
| Mud Lake | city | 491 | None recorded | Wholly in this county |
| Lewisville | city | 453 | None recorded | Wholly in this county |
| Hamer | city | 59 | 1 | Wholly in this county |
A further 1 of the county's 57 SBA 7(a) approvals are to borrowers in cities that match no Census place in Jefferson County, the largest being Terreton (1). Those are postal cities, unincorporated areas and cities outside the county, so no place row claims them; they are counted in the county total above.
Nearby