What is the median household income in 21758?

The median household income in 21758 is $110,694.

Which ZIP codes are near 21758?

Use the radius tool on this page to list ZIP codes within a chosen distance of 21758.

ZIP code

21758

Knoxville, MD

STANDARD

21758 covers Knoxville in Frederick County, with 4,238 people in the ACS 2023 estimate.

Figures are for the Census ZIP Code Tabulation Area (ZCTA), which is not the same as a USPS ZIP code. A PO Box or unique ZIP may have no ZCTA and no demographics. Methodology

ACS 2023 population

4,238

Median household income

$110,694

Median home value

$388,200

U.S. Census Bureau, ACS 2019–2023 5-year (vintage 2023). Geography: ZCTA 21758. Methodology

ZIP code map of 21758

Census ZCTA boundary for ZIP 21758 in Knoxville, Maryland. A ZCTA is not the same as a USPS ZIP code. Boundaries: U.S. Census Bureau. Methodology · Data sources

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About ZIP code 21758

Type

STANDARD

City

Knoxville

County

Frederick County

Timezone

America/New_York

Area codes

227, 240, 301, 304, 540, 681, 826

Land area

32.0 sq mi

Water area

2.83 sq mi

Households

1,672

Median gross rent

$1,696

Acceptable cities: Brunswick

More enterprise fields

Timezone

America/New_York

Area Codes

227, 240, 301, 304, 540, 681, 826

World Region

Country

Commercial ZIP directory · not ACS

Commercial ZIP directory population_count for ZCTA 21758. Not ACS. Methodology

People in 21758

Race

White3,988
Black or African American299
American Indian or Alaska Native11
Asian72
Other race66
Two or more races373

Hispanic or Latino (any race): 267

Age

Under 10615
10 to 19678
20 to 29404
30 to 39537
40 to 49648
50 to 59779
60 to 69658
70 to 79340
80 and older150

Income and housing in 21758

Poverty rate

5.3%

Median earnings

$69,468

Median household income

$110,694

Median home value

$388,200

Median gross rent

$1,696

Education

High school graduate93.1%
Bachelor's degree42.3%
Graduate degree21.8%

Places covering 21758

Cities and places — Population overlap

Share of this ZIP/ZCTA’s population located within each place, based on ZIP Code Database place-overlap data. This is a population measure, not land-area overlap or the Census-place population.

ZIP Code Database place-overlap table, field percent_of_zip_population_in_place, keyed by place_geoid. Not ACS 2019–2023. Overlap vintage is the shipped overlap table and is separate from ACS. Methodology

Counties — Population overlap

Share of this ZIP/ZCTA’s population located within each county, based on ZIP Code Database county-overlap data. This is a population measure, not land-area overlap or the Census county population.

Frederick County64.9%
Washington County35.1%

ZIP Code Database county-overlap table, field percent_of_zip_population_in_county, keyed by county_geoid. Not ACS 2019–2023. Overlap vintage is the shipped overlap table and is separate from ACS. Methodology

62.5% of this ZIP is outside city limits (a real overlap row, not missing data).

Population history for 21758

IRS populationACS population

Hover the chart or read the table below (Year | ACS | IRS).

Population history. Year | ACS population | IRS population. ACS and IRS are separate series. Blank cells mean that source did not publish a count for the year.
Year	ACS population	IRS population
2005		4,484
2006		4,447
2007		4,720
2008		4,501
2009		4,578
2010		4,610
2011	5,426	4,475
2012	5,005	4,510
2013	4,909	4,460
2014	4,759	4,520
2015	4,909	4,450
2016	4,705	4,450
2017	4,844	4,480
2018	4,912	4,490
2019	5,127	4,550
2020	4,616	4,650
2021	4,454	4,580
2022	4,610	4,540
2023	4,238

ACS: U.S. Census Bureau American Community Survey 5-year estimates. IRS: Statistics of Income ZIP Code data.

ZIP codes near 21758

12 nearest ZIP centroids (any distance)

21715Brownsville1.8 miPop 18 · Income —
21716Brunswick2.9 miPop 6,757 · Income $107,188
21718Burkittsville3.2 miPop 142 · Income $102,917
21755Jefferson4.8 miPop 5,740 · Income $134,677
21779Rohrersville4.9 miPop 1,449 · Income $80,743
20180Lovettsville5.9 miPop 7,791 · Income $162,955
25425Harpers Ferry7.0 miPop 13,404 · Income $90,059
21756Keedysville7.6 miPop 3,172 · Income $91,836
21769Middletown7.8 miPop 12,695 · Income $148,821
25432Millville8.0 miPop 113 · Income $47,750
21777Point Of Rocks8.5 miPop 2,333 · Income $136,827
21714Braddock Heights8.8 miPop 113 · Income $208,750

ZIP centroids within 2 miles

ZIP centroids within 2 miles of 21758, measured by Census internal point.
ZIP	City	State	Distance (miles)	ACS population	Median income
21715	Brownsville	MD	1.8 mi	18	—

ZIPs within 2 miles of this place

Default is 2 miles. Distances are between ZIP centroids. Widen the radius if nothing is in range.

Radius (miles)

21758 Knoxville, MD

Looking up ZIP codes within 2 miles of 21758 Knoxville, MD, measured by centroid distance.

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Households

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Avg median income

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ZIP code 21758 FAQ

What city is ZIP code 21758 in?: 21758 is in Knoxville, MD.
What county is 21758 in?: 21758 is in Frederick County.
What is the median household income in 21758?: The median household income in 21758 is $110,694.
Which ZIP codes are near 21758?: Use the radius tool on this page to list ZIP codes within a chosen distance of 21758.