Population & age
- Total population
- 571
- Median age
- 30.2
Summit, SD (57266)
Grant County · Population 571
Fresh.Data current as of Apr 24, 2026
Summit, SD (ZIP 57266) sits in Grant County. The page draws on 2 federal data feeds retrieved Apr 27. Top health signal: Obesity comes in above the national average at 42.2%. NCES lists 2 schools serving the area, 2 non-charter. 2 colleges and universities serve the area, with median in-state tuition of $5,524. IRS data shows average household income (AGI) of $69,384, well above the ~$45K national average per return. BLS LAUS reports county unemployment of just 2.4% (2024), well below the ~4.0% US average and consistent with a tight local labor market. FDIC counts just 1 bank branch in this ZIP (Summary of Deposits, 2024) — residents likely lean on neighboring ZIPs or online banking for most services. FEMA has issued 26 federal disaster declarations affecting this ZIP since 1969 — a high-frequency exposure profile. Annual average temperature is just 42.6°F per NOAA's 1991–2020 Climate Normals — a notably cold-weather climate. South Dakota has no state income tax, saving the local median household (AGI $69,384) approximately $3,192/year vs the US average effective state tax rate. New residents arriving here predominantly come from Roberts County, SD (IRS SOI Migration, 2022-2023). Healthcare access is the area's quieter strength; school options sit on the lighter side, so families may find themselves looking at districts a few ZIPs over. Notable: median household income $62,292, fair market rent of $1,010 for a two-bedroom, and a 21.2% poverty rate (well above the ~12% US average). Every figure on this page links to its underlying federal dataset with a retrieval date so you can audit the freshness yourself.
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Demographics
Race & ethnicity
- White
- 78.1%
- Black
- 0.5%
- Asian
- 0.5%
- Hispanic / Latino
- 2.8%
- Other / multi-racial
- 4.4%
Income & housing
- Median household income
- $62,292
- Median home value
- $103,800
Education
- Bachelor's degree or higher (age 25+)
- 14.9%
Employment
- Unemployment rate
- 3.8%
Housing
- Owner-occupied
- 140(73.3%)
- Renter-occupied
- 51(26.7%)
- Vacant units
- 44
- Built (median)
- 1947
Commute
- Public transit
- 0(0.0%)
- Work from home
- 26(9.5%)
- Avg commute
- 22.4 min
Economic wellbeing
- Below poverty line
- 121(21.2%)
- Uninsured
- 24(4.2%)
Digital access
- Broadband access
- 152(79.6%)
- No broadband
- 39(20.4%)
Language & nativity
- Foreign-born
- 5(0.9%)
- Non-English at home
- 44(8.7%)
Fair Market Rent
Fresh.HUD SAFMR · May 1, 2026Studio
$700
/month
1 Bed
$840
/month
2 Bed
$1,010
/month
3 Bed
$1,360
/month
4 Bed
$1,660
/month
HUD Fair Market Rents represent the 40th percentile of standard-quality rental housing in this area. FY2026 data.
New housing construction
New housing units permitted
45
Across 42 permitted buildings. Total construction value: $13.9M.
Single-family
41
91% of total units
Multifamily (2+ unit)
4
9% of total units
Single-family value
$13.3M
construction value
Multifamily value
$585,100
construction value
Aggregated from 2 counties touching this ZIP (2024).
Source: U.S. Census Bureau Building Permits Survey (census.gov/construction/bps). Public domain. BPS reports annual residential building permits from local permit-issuing jurisdictions, aggregated to county. A permit reflects intent to build, not a completed unit — actual construction lags by 6-24 months for multifamily projects.
Income & tax statistics
Tax returns filed
250
Average AGI
$69,384
Avg property tax
—
EITC participation
12.0%
Income distribution
- $1 – $25,00024.0% · 60
- $25,000 – $50,00028.0% · 70
- $50,000 – $75,00020.0% · 50
- $75,000 – $100,00012.0% · 30
- $100,000 – $200,00016.0% · 40
- $200,000 or more0.0% · 0
Avg mortgage interest
—
Avg charitable contribution
—
Avg capital gains
$2,988
Avg total income tax
—
Source: IRS Statistics of Income — Individual Income Tax Statistics by ZIP Code (irs.gov). Public domain. Dollar columns reported in thousands by the IRS; figures here display real dollars. Total ZCTA AGI for the area was $17.3M across all reported brackets.
Business & employment
Business establishments
19
Total employment
106
Annual payroll
$5.5M
Average annual pay
$52,349
Source: U.S. Census Bureau, ZIP Business Patterns (census.gov). Public domain. ZBP covers establishments with paid employees; Census suppresses employment and payroll values when fewer employers operate in a ZIP than would protect their confidentiality.
Employment & wages
Average annual pay
$54,491
Average weekly wage
$1,048
Total employment
3,854
Total establishments
382
That is roughly 17% below the US national average of $65,470 per worker.
Source: U.S. Bureau of Labor Statistics, Quarterly Census of Employment and Wages (bls.gov/cew). Public domain. QCEW is derived from state unemployment-insurance filings and covers ~95% of US jobs. Figures are county-level totals assigned to ZIPs whose primary county matches; small-employer cells are suppressed by BLS to protect employer confidentiality.
Unemployment
Unemployment rate
2.4%
That is 1.6 percentage points below the US national unemployment rate of about 4.0%.
Labor force
4,146
Employed
4,045
Unemployed
101
Based on Grant County, SD data (2024).
Source: U.S. Bureau of Labor Statistics, Local Area Unemployment Statistics (bls.gov/lau). Public domain. LAUS publishes monthly and annual labor-force estimates for every US county. Figures are county-level totals assigned to ZIPs whose primary county matches.
Banking access
FDIC-insured bank branches
1
Limited banking access
Only a handful of branches — residents may rely on neighboring ZIPs or online banking for most services.
Total deposits
$41.1M
across all branches in this ZIP
Distinct institutions
1
different banks operating here
Top banks by deposits in this ZIP
- 1.Minnwest Bank$41.1M · 1 branch
Based on FDIC-insured branch offices as of June 30, 2024.
Source: FDIC Summary of Deposits (fdic.gov). Annual June-30 snapshot of every FDIC-insured branch and the deposits booked there. Figures cover all institutions reporting a branch address in this ZIP.
Federal Disaster Declarations
Federally Declared Disasters
26
Date Range
1969–2023
Most Recent Declaration
FLOODING
Flood — declared July 6, 2023 (DR-4718)
Incident period: April 9, 2023 – May 5, 2023
Top Incident Types
- Flood10 (38%)
- Severe Storm10 (38%)
- Biological2 (8%)
- Winter Storm1 (4%)
- Coastal Storm1 (4%)
- Other2 (8%)
Individual Assistance
5
Direct help to disaster survivors
Households Program
1
Housing & temporary lodging support
Public Assistance
26
Repair of public facilities & roads
Hazard Mitigation
14
Funding to reduce future disaster risk
FEMA declares disasters at the county level; counts here include every federally declared disaster touching any county that overlaps this ZIP. Statewide declarations and pre-1964 records without county granularity are excluded. Program flags reflect which FEMA assistance categories were activated (Individual Assistance, Households, Public Assistance, Hazard Mitigation). Source: fema.gov/openfema. Public domain.
Climate
30-year averages (1991-2020) from the nearest GHCN-D weather station. Temperature and precipitation values reflect typical annual conditions, not any single year.
Avg. temperature
42.6°F
31.6° – 53.6°
Annual precipitation
25.7"
Annual snowfall
58.6"
Heating · cooling days
8,603.9 · 481.5
Annual base 65°F
Nearest station: SUMMIT 1 W, SD US, 1.8 miles from the centroid of Summit, SD (ZIP 57266)
Source: NOAA National Centers for Environmental Information, 1991–2020 U.S. Climate Normals (ncei.noaa.gov). Public domain.
Community health profile
Years of potential life lost (per 100K)
5,749
That is roughly 2,451 years per 100,000 below the national county median (~8,200).
Premature death is the headline composite outcome CHR reports — age-adjusted, all-cause, before age 75.
Fair or poor health
13%
of adults self-report
Poor physical health days
3.3
avg per adult per month
Poor mental health days
4.2
avg per adult per month
Uninsured
10.4%
of residents under 65
Primary care MDs
80
per 100,000 residents
Preventable hospital stays
1,090
per 100K Medicare enrollees
Food environment (0-10)
8.8
10 = best access & security
Exercise access
58%
residents near a facility
Flu vaccinated
41%
of Medicare enrollees
Low birth weight (under 2,500 g) accounts for 6.2% of live births in this county — an early-life health input that downstream outcomes track against.
Based on Grant data (2025 CHR release).
Source: County Health Rankings & Roadmaps, University of Wisconsin Population Health Institute (countyhealthrankings.org). Annual release. Underlying source datasets vary by measure (CDC BRFSS, NCHS Vital Statistics, AHA, USDA Food Environment Atlas, and others). Figures are county-level and assigned to every ZIP whose primary county matches.
Food access
Food access status
Moderate food access challenges
18.9% of Grant County, SD residents live more than 1 mile (urban) or 10 miles (rural) from the nearest supermarket.
Grocery stores
0.57
per 1,000 residents
Supercenters & clubs
—
per 1,000 residents
SNAP-authorized stores
0.80
accepting food benefits
Fast-food restaurants
0.86
per 1,000 residents
Among low-income residents, 4.0% are low-access — those without a supermarket within 1 mile (urban) or 10 miles (rural).
Per-1,000 figures show how many of each store type exist in Grant County, SD for every 1,000 residents. Higher grocery and supercenter density usually means easier access to fresh food; higher convenience-store-only density (with low grocery rate) often signals a food swamp.
Source: USDA Economic Research Service, Food Environment Atlas (ers.usda.gov). County-level metrics fanned to ZIP via the primary county in the Census ZCTA-county relationship file. Variable years differ per family (stores ~2020, low-access ~2019).
Safety
FBI publishes crime data at the county level. Numbers below cover the primary county that contains this ZIP. Rates are per 100,000 residents in the area covered by reporting agencies.
Violent crime rate
—
per 100K residents · 14 reports
Property crime rate
—
per 100K residents · 7 reports
Homicide
0
Robbery
0
Burglary
3
Vehicle theft
0
County-level data for Roberts (2024)
Source: U.S. Federal Bureau of Investigation, Uniform Crime Reporting Program (cde.ucr.cjis.gov). Public domain. Coverage varies by reporting agency; areas with partial agency coverage may understate true crime totals.
Who’s moving in and out
Net migration (2022-2023)
▼−31 people
−17 households • −$5.0M net AGI flow
Moved in
194households
315 people • $10.2M AGI
Moved out
211households
346 people • $15.2M AGI
Where new residents came from
- Roberts County, SD — 22 households
- Codington County, SD — 21 households
Where departing residents went
- Codington County, SD — 30 households
Incoming households reported an average AGI of $52,448 versus departing households' $71,905.
Source: U.S. Internal Revenue Service, Statistics of Income, Migration Data (irs.gov). Public domain. Migration is measured by year-over-year changes in the address on individual tax returns; figures are county-level totals attributed to ZIPs whose primary county matches. Foreign migration contributes to inflow/outflow totals but does not appear in the top-county lists. Small flows are suppressed by IRS to protect taxpayer confidentiality.
Taxes & benefits in South Dakota
State-level rules that apply to every resident of ZIP 57266. Numbers reflect the most recent published year per source.
Tax rates
Income tax
None
No state income tax
Sales tax (combined)
6.11%
State 4.20% · avg local 1.91%
Property tax (effective)
0.59%
Median $595/year
Tax burden rank
5 of 50
8.60% of personal income
For ZIP 57266: A household at this ZIP's median AGI of $69,384 keeps approximately $3,192 more annually than residents of the typical income-tax state. Applied to this ZIP's typical home value of $103,800, that works out to roughly $607/year in property tax.
Paid family leave
Program
No program
No program
Safety net
SNAP eligibility
130% FPL
Federal 130% FPL gross income limit. Asset limit $3,000.
Sources: Tax Foundation (state tax rates & brackets), Bipartisan Policy Center (paid family leave), USDA FNS (SNAP categorical eligibility).
Other ZIPs near 57266
Nearby ZIPs by distance
57256 (Ortley, 5.8 mi) · 57251 (Marvin, 7.7 mi) · 57273 (Waubay, 9.4 mi) · 57263 (South Shore, 11.1 mi) · 57279 (Wilmot, 13.9 mi) · 57257 (Peever, 14.6 mi)
Compare ZIP-level stats — population, schools, housing, climate — across nearby areas. Source: U.S. Census Bureau ZCTA basemap.
Data sources used on this page
SourcesFresh.CDC PLACES · Apr 24, 2026Fresh.NCES CCD via Urban Institute EDP · Apr 27, 2026Fresh.HUD SAFMR · May 1, 2026
All data on this page is sourced from federal government datasets · Not AI-generated · Methodology
Health profile
Crude prevalence estimates from CDC PLACES, derived from BRFSS small-area modeling. Population-level figures only.
Obesity
42.2%
9.2pp above the 33.0% national rate.
High Blood Pressure
35.6%
3.6pp above the 32.0% national rate.
Depression
21.6%
Tracks close to the 22.0% national rate.
Annual Checkup
74.7%
Tracks close to the 76.0% national rate.
Health Insurance
11.9%
Tracks close to the 13.0% national rate.
Diabetes
13.6%
2.6pp above the 11.0% national rate.
Schools in this ZIP
2 schools serve this ZIP, including 2 non-charter.
| School | Type | Grades | Enrollment |
|---|---|---|---|
| Summit Elementary - 02 | Public | -1–8 | 132 |
| Summit High School - 01 | Public | 9–12 | 54 |
Schools listed from NCES Common Core of Data via the Urban Institute Education Data Portal.
Fresh.NCES CCD via Urban Institute EDP · Apr 27, 2026Colleges & universities nearby
Colleges in this area
2
Median in-state tuition
$5,524
Median earnings (10 yr)
$38,510
- 2-Year
Lake Area Technical College
Watertown, SD · 57201
- In-state tuition
- $6,718
- Out-of-state tuition
- $6,718
- Acceptance rate
- —
- Graduation rate
- 69.0%
- Median earnings (10 yr)
- $45,473
- Median student debt
- $12,000
- 4-Year
Sisseton Wahpeton College
Sisseton, SD · 57262
- In-state tuition
- $4,330
- Out-of-state tuition
- $4,330
- Acceptance rate
- —
- Graduation rate
- 15.9%
- Median earnings (10 yr)
- $31,546
- Median student debt
- —
Source: U.S. Department of Education College Scorecard (collegescorecard.ed.gov). Public domain data. Earnings figures reflect median earnings 10 years after entry for federally-aided students.
What these numbers say together
Summit, SD (ZIP 57266) sits in Grant County. The page draws on 2 federal data feeds retrieved Apr 27. Top health signal: Obesity comes in above the national average at 42.2%. NCES lists 2 schools serving the area, 2 non-charter. 2 colleges and universities serve the area, with median in-state tuition of $5,524. IRS data shows average household income (AGI) of $69,384, well above the ~$45K national average per return. BLS LAUS reports county unemployment of just 2.4% (2024), well below the ~4.0% US average and consistent with a tight local labor market. FDIC counts just 1 bank branch in this ZIP (Summary of Deposits, 2024) — residents likely lean on neighboring ZIPs or online banking for most services. FEMA has issued 26 federal disaster declarations affecting this ZIP since 1969 — a high-frequency exposure profile. Annual average temperature is just 42.6°F per NOAA's 1991–2020 Climate Normals — a notably cold-weather climate. South Dakota has no state income tax, saving the local median household (AGI $69,384) approximately $3,192/year vs the US average effective state tax rate. New residents arriving here predominantly come from Roberts County, SD (IRS SOI Migration, 2022-2023). Healthcare access is the area's quieter strength; school options sit on the lighter side, so families may find themselves looking at districts a few ZIPs over. Notable: median household income $62,292, fair market rent of $1,010 for a two-bedroom, and a 21.2% poverty rate (well above the ~12% US average). Every figure on this page links to its underlying federal dataset with a retrieval date so you can audit the freshness yourself.
The two domains pull in different directions. Healthcare access reads strong, but the on-paper school count is on the lighter side — that’s less a quality signal and more a density one. Households here often look at districts a few ZIPs over for school choice while keeping their providers local.
One concrete reading worth keeping: Depression prevalence sits near the national rate at 21.6%. Each figure on this page links to the original federal dataset with its retrieval date — this synthesis is a reading, not a substitute for the underlying records.
Frequently Asked Questions — ZIP 57266
What is the obesity rate in ZIP 57266?
42.2%, which is 9.2 percentage points above the national average of 33.0% (CDC PLACES, retrieved Apr 24, 2026).
What is the depression rate in ZIP 57266?
21.6%, which is 0.4 percentage points below the national average of 22.0% (CDC PLACES, retrieved Apr 24, 2026).
What is the high blood pressure rate in ZIP 57266?
35.6%, which is 3.6 percentage points above the national average of 32.0% (CDC PLACES, retrieved Apr 24, 2026).
How many schools are in ZIP 57266?
2 schools serve this ZIP, including 2 public schools (NCES CCD, retrieved Apr 27, 2026). No charter schools are listed in this ZIP by NCES CCD.
Does ZIP 57266 have charter schools?
No charter schools are listed in ZIP 57266 by NCES CCD (retrieved Apr 27, 2026).
Are there high schools in ZIP 57266?
Yes, 1 high school serves this ZIP: Summit High School - 01. (NCES CCD, retrieved Apr 27, 2026).
What is the population of ZIP 57266?
571 people live in ZIP 57266, with a median age of 30.2 (Census ACS 5-Year 2022, retrieved Apr 30, 2026).
What is the median household income in ZIP 57266?
$62,292 per year (Census ACS 5-Year 2022, retrieved Apr 30, 2026).
Is ZIP 57266 mostly renters or homeowners?
In ZIP 57266, 73.3% of occupied housing units are owner-occupied and 26.7% are renter-occupied (Census ACS 5-Year 2022, retrieved Apr 30, 2026).
How do people commute in ZIP 57266?
In ZIP 57266, 9.5% of workers work from home. Public transit is used by 0.0% of commuters (Census ACS 5-Year 2022, retrieved Apr 30, 2026).
What is the poverty rate in ZIP 57266?
21.2% of the population in ZIP 57266 lives below the federal poverty line (Census ACS 5-Year 2022, retrieved Apr 30, 2026).
What percentage of households in ZIP 57266 have broadband internet?
79.6% of households in ZIP 57266 have broadband internet access (Census ACS 5-Year 2022, retrieved Apr 30, 2026).
What is the average household income in ZIP 57266?
The average Adjusted Gross Income reported on tax returns from ZIP 57266 (Summit, SD) is $69,384 per return (IRS SOI Tax Year 2022, retrieved May 2, 2026).
How much do homeowners pay in property tax in ZIP 57266?
Tax returns from ZIP 57266 report an average of $0 per return in real-estate tax deductions (IRS SOI Tax Year 2022, retrieved May 2, 2026).
What percentage of residents in ZIP 57266 earn over $200,000?
0.0% of tax returns from ZIP 57266 (Summit, SD) report Adjusted Gross Income of $200,000 or more (IRS SOI Tax Year 2022, retrieved May 2, 2026).
How many businesses are in ZIP 57266?
As of 2022, 19 business establishments operated in ZIP 57266 employing 106 workers (Census ZIP Business Patterns, retrieved May 3, 2026).
What is the average salary in ZIP 57266?
The average annual pay across all local establishments in ZIP 57266 is $52,349, based on Census ZIP Business Patterns 2022 data (retrieved May 3, 2026).
How vulnerable is ZIP 57266 to disasters and public health emergencies?
According to the CDC Social Vulnerability Index (2022), ZIP 57266 ranks in the 59th percentile nationally for social vulnerability — a high vulnerability profile (retrieved May 3, 2026).
What is the biggest vulnerability factor in ZIP 57266?
Housing Type & Transportation is the highest-scoring CDC SVI theme for ZIP 57266, ranking in the 62th percentile nationally (CDC/ATSDR Social Vulnerability Index 2022, retrieved May 3, 2026).
How many federally declared disasters has ZIP 57266 experienced?
FEMA has recorded 26 federal disaster declarations affecting ZIP 57266 between 1969–2023 (FEMA OpenFEMA Disaster Declarations, retrieved May 3, 2026).
What kinds of disasters most often hit ZIP 57266?
Flood is the most common federally declared disaster type affecting ZIP 57266, accounting for 10 of 26 declarations (38%, FEMA OpenFEMA, retrieved May 3, 2026).
What was the most recent disaster declared for ZIP 57266?
The most recent FEMA disaster declaration affecting ZIP 57266 was "FLOODING" — a flood declared in 2023 (DR-4718) (FEMA OpenFEMA, retrieved May 3, 2026).
What colleges are near ZIP 57266?
2 colleges and universities are listed near ZIP 57266 by the U.S. Department of Education College Scorecard, including Lake Area Technical College and Sisseton Wahpeton College (retrieved May 2, 2026).
What is the average tuition at colleges near ZIP 57266?
Median in-state tuition across 2 nearby institutions is $5,524 (College Scorecard, retrieved May 2, 2026).
What do graduates earn from colleges near ZIP 57266?
Graduates of nearby colleges earn a median of $38,510 ten years after entry (College Scorecard, retrieved May 2, 2026).
What is the climate like in ZIP 57266?
ZIP 57266 has an average annual temperature of 42.6°F and 25.7" of annual precipitation based on the SUMMIT 1 W, SD US weather station 1.8 miles from the ZIP centroid (NOAA 1991–2020 Climate Normals, retrieved May 8, 2026).
What taxes apply in ZIP 57266?
South Dakota has no state income tax. For a household earning the local median AGI of $69,384, this saves approximately $3,192 per year compared to the national average effective state tax rate. The combined state and local sales tax rate is 6.11% (Tax Foundation 2025).
Does South Dakota have paid family leave?
South Dakota has no state paid family leave program (Bipartisan Policy Center 2026).
What data is available for ZIP 57266?
This page covers health outcomes from CDC PLACES (33 metrics), school information from NCES CCD (2 schools), demographics from the Census ACS 5-Year (2022), colleges from the U.S. Department of Education College Scorecard (2 institutions), income & tax statistics from the IRS SOI (Tax Year 2022), local business & employment from Census ZIP Business Patterns (2022), social vulnerability scores from the CDC/ATSDR SVI (2022), federal disaster declarations from FEMA OpenFEMA (26 on record), climate normals from NOAA NCEI (1991-2020), county-level crime data from the FBI Crime Data Explorer (2024), and state-level tax rates from the Tax Foundation. Data is refreshed on Mubboo's standard schedule.
How current is this data?
Health data retrieved Apr 24, 2026 from CDC PLACES. School data retrieved Apr 27, 2026 from NCES CCD. Demographics retrieved Apr 30, 2026 from Census ACS 5-Year (2022). College data retrieved May 2, 2026 from U.S. Dept of Education College Scorecard. Income & tax statistics retrieved May 2, 2026 from IRS SOI (Tax Year 2022). Business & employment retrieved May 3, 2026 from Census ZBP (2022). Social vulnerability scores retrieved May 3, 2026 from CDC/ATSDR SVI (2022). Federal disaster declarations retrieved May 3, 2026 from FEMA OpenFEMA (26 on record). Climate normals retrieved May 8, 2026 from NOAA NCEI (1991-2020). County-level crime data retrieved May 4, 2026 from the FBI Crime Data Explorer (2024). State-level tax rates retrieved 2026-05-05 15:58:22.284+00 from the Tax Foundation.
Other ZIPs near 57266
Nearby ZIPs by distance
57256 (Ortley, 5.8 mi) · 57251 (Marvin, 7.7 mi) · 57273 (Waubay, 9.4 mi) · 57263 (South Shore, 11.1 mi) · 57279 (Wilmot, 13.9 mi) · 57257 (Peever, 14.6 mi)
Compare ZIP-level stats — population, schools, housing, climate — across nearby areas. Source: U.S. Census Bureau ZCTA basemap.
More Info topics
Have a specific question about ZIP 57266?
Ask Mubboo — launching Q4 2026.
Data refreshed via Mubboo's ETL pipeline; oldest source on this page retrieved Apr 24, 2026.
Social Vulnerability Index
Overall SVI
59th percentile
High Vulnerability
Based on 2 census tracts, population 709
Vulnerability Themes
Households Without Vehicle
5
Limited English Speakers
1
Persons with Disability
64
Without HS Diploma
45
Without Health Insurance
143
Adults Age 65+
123
The Social Vulnerability Index uses U.S. Census data to identify communities most at risk during public health emergencies and natural disasters. Higher percentiles indicate greater vulnerability. Tract-level scores are aggregated to this ZCTA via Census 2020 ZCTA→Tract crosswalk, weighted by land-area share. Source: atsdr.cdc.gov. Public domain.