21530 ZIP Code — Flintstone, MD

Allegany County, Maryland

ZIP code 21530 is located in Flintstone, Maryland, within Allegany County. It covers approximately 60.89 square miles and serves a population of 1,783 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 240.

About ZIP code 21530

The housing stock consists of predominantly single-family detached homes. Most homes were built in the pre-1940, giving the area an established character. Median home value is $198,500. Owner-occupancy is high at 82%, well above the national average.

Median household income is $57,115.

The dominant occupation class is sales and office, with retail trade as the leading industry. The average commute of 29 minutes is near the national average.

College attainment at 19% is below the national average, consistent with a trades and production-oriented local economy.

Health indicators show elevated rates of smoking (21%) compared to national benchmarks.

Overall, ZIP code 21530 reflects a community defined by a trades-oriented workforce and high homeownership.

1,783

population

60.89

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

21530 ZIP code map

Cities in ZIP code 21530

Below are the cities the US Postal Service accepts for ZIP code 21530. Using any city not on this list may result in mail delivery delays.

City	Status
Flintstone	Preferred

Nearby ZIP codes

21555 Oldtown (6.4 mi) 21766 Little Orleans (6.6 mi) 15535 Clearville (11.7 mi) 25422 Great Cacapon (12.3 mi) 21502 Cumberland (13.4 mi) 26767 Wiley Ford (13.4 mi) 26722 Green Spring (14.1 mi) 25434 Paw Paw (14.3 mi) 25437 Points (15.9 mi) 26763 Springfield (16.6 mi) 15545 Hyndman (17.1 mi) 21750 Hancock (17.3 mi)

Demographics updated 05/2026

Population
Total population	1,783
Population density	29 / sq mi
State FIPS	24
County FIPS	001

Geography
Land area	60.89 sq mi
Water area	0.48 sq mi
Latitude	39.6794
Longitude	-78.5220
Timezone	Eastern (ET)
Area code	240

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	39.8%	49.9%	28.2%
$50k – $100k	44.0%	33.2%	28.2%
$100k – $200k	13.7%	14.9%	30.1%
Over $200k	2.4%	2.0%	13.4%

Demographics & statistics

1,783

Population

People per sq mi

46.9

Median age

$57,115

Median household income

$26,693

Per capita income

$198,500

Median home value

$1,102

Median monthly rent

82.0%

Home ownership

12.8%

Poverty rate

1.7%

Unemployment

831

Housing units

19.3%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

10–14

15–19

20–24

25–34

136

35–44

110

125

45–54

102

55–59

161

60–64

131

117

65–74

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	365	20.5%
18 and over	1,418	79.5%
65 and over	263	14.8%
Median age	46.9 years

Race & ethnicity

White 96.6%

Hispanic or Latino 1.2%

Other race 1.2%

Black or African American 0.7%

Two or more races 0.3%

Group	Count	%
White	1,743	96.6%
Hispanic or Latino	22	1.2%
Other race	22	1.2%
Black or African American	13	0.7%
Two or more races	5	0.3%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	39.8%	49.9%	28.2%
$50k – $100k	44.0%	33.2%	28.2%
$100k – $200k	13.7%	14.9%	30.1%
Over $200k	2.4%	2.0%	13.4%

Under $10k 9.1%

$10k–$15k 2.4%

$15k–$25k 7.1%

$25k–$35k 10.8%

$35k–$50k 15.3%

$50k–$75k 24.9%

$75k–$100k 12.2%

$100k–$150k 13.1%

$150k–$200k 3.2%

$200k+ 1.8%

Range	% of households
Under $10k	9.1%
$10k–$15k	2.4%
$15k–$25k	7.1%
$25k–$35k	10.8%
$35k–$50k	15.3%
$50k–$75k	24.9%
$75k–$100k	12.2%
$100k–$150k	13.1%
$150k–$200k	3.2%
$200k+	1.8%
Median income	$57,115

Housing

Home values

Under $50k 6.7%

$50k–$100k 9.4%

$100k–$150k 20.4%

$150k–$200k 13.8%

$200k–$300k 30.9%

$300k–$500k 9.7%

$500k–$1M 9.1%

Housing overview

Metric	Value
Median home value	$198,500
Median rent / month	$1,102
Owner occupied	82.0%
Renter occupied	18.0%
Vacant	19.9%
Single-family detached	79.5%
Large apartment buildings	0.0%
Mobile homes	20.5%
Median rooms	6.2
Avg household size (owned)	2.24

Year built

Era	%
2020 or later	0.0%
2010–2019	3.7%
2000–2009	4.4%
1990–1999	15.6%
1980–1989	8.9%
1970–1979	12.7%
1960–1969	18.4%
1950–1959	7.0%
1940–1949	3.5%
1939 or earlier	25.8%

Bedrooms

Size	% of units
No bedroom (studio)	2.3%
1 bedroom	1.5%
2 bedrooms	22.8%
3 bedrooms	42.8%
4 bedrooms	22.0%
5+ bedrooms	8.5%

Vehicles per household

Vehicles	% of households
No vehicle	5.1%
1 vehicle	28.9%
2 vehicles	32.6%
3 or more	33.3%

Heating fuel

Fuel type	%
Utility gas	1.5%
Electricity	29.2%
Propane / LP gas	9.5%
Fuel oil	26.0%
Wood	29.8%
No fuel used	0.4%

Households & families

Household type	Count	%
Married-couple family	402	51.7%
Cohabiting couple	14	1.8%
Male householder, no spouse	176	22.6%
Female householder, no spouse	186	23.9%
Households with children under 18	189	24.3%
Households with seniors (65+)	224	28.8%
Average household size	2.28

Marital status

Status	Male	Female
Never married	31.7%	21.3%
Married	54.1%	56.6%
Separated	0.0%	0.0%
Widowed	3.8%	9.6%
Divorced	10.3%	12.5%

Education

Less than 9th grade 4.3%

Some HS, no diploma 9.7%

HS graduate 33.6%

Some college, no degree 18.6%

Associate's degree 14.4%

Bachelor's degree 7.9%

Graduate / professional 11.4%

Metric	%
HS diploma or higher	85.9%
Bachelor's or higher	19.3%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	0	0.0%
Kindergarten	16	4.6%
Elementary school	157	45.1%
High school	135	38.8%
College / grad school	40	11.5%

Employment

Industry of employment

Retail trade 28.9%

Education & healthcare 13.3%

Professional & management 11.9%

Arts, food & hospitality 6.4%

Public administration 6.4%

Construction 5.5%

Wholesale trade 5.5%

Transportation & utilities 5.4%

Agriculture & mining 4.2%

Finance & real estate 3.9%

Information 3.2%

Manufacturing 2.7%

Other services 2.7%

Occupation

Category	%
Management, business & arts	16.5%
Service	13.5%
Sales & office	42.3%
Natural resources & construction	11.0%
Production & transportation	16.8%

Employment type

Type	%
Private sector	68.7%
Government	14.8%
Self-employed	14.5%
Unpaid family workers	2.0%

Commute

Method	%
Drive alone	72.7%
Carpool	7.6%
Public transit	1.8%
Walk	1.6%
Work from home	16.4%
Other means	0.0%
Avg commute (minutes)	29.0

Poverty

All people 12.8%

Under 18 years 22.1%

18 and over 10.5%

Married-couple families 5.5%

Female-led households 18.9%

Income support

Source	% of households
Social Security	29.0%
Retirement income	24.9%
Supplemental Security	10.9%
Cash public assistance	1.5%
Food stamps / SNAP	15.8%

Health indicators

Condition	%
Obesity	34.8%
High blood pressure	41.3%
High cholesterol	34.0%
Diabetes	12.6%
Heart disease	8.3%
Stroke	4.0%
Asthma	10.6%
Arthritis	32.4%
Kidney disease	3.5%
Pulmonary disease	9.6%
Cancer	7.9%

Behavior / access	%
Smoking	20.6%
Binge drinking	13.9%
No physical activity	28.0%
Less than 7 hrs sleep	33.5%
Depression	23.9%
Fair or poor health	17.6%
Poor mental health	15.6%
Poor physical health	11.9%
No health insurance	11.5%
Visited doctor (checkup)	77.8%
Visited dentist	58.0%
Cholesterol screening	90.6%
Teeth loss	16.7%

Veterans & disability

Veterans	Count	%
Civilian veterans	78	5.5%

Disability	%
Any disability	14.9%
Under 18	5.0%
18–64 years	16.2%
65 and over	22.8%

Health insurance coverage

Type	%
Private insurance	58.1%
Public insurance	42.7%
No insurance	11.1%
Uninsured under 19	23.4%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	1,698	95.2%
Spanish	22	1.3%
Other Indo-European	22	1.3%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	1,754	98.4%
Born in same state	1,754	98.4%
Born in different state	1,234	69.2%
Foreign born	0	0.0%
Naturalized citizen	29	1.6%
Not a US citizen	29	100.0%

Ancestry

Ancestry	Count	%
Arab	174	9.8%
French	151	8.5%
Italian	105	5.9%

Ancestry	Count	%
Polish	16	0.9%
Irish	14	0.8%
Norwegian	13	0.7%

Technology access

Metric	% of households
Computer access	43.6%
Internet access	91.0%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions about ZIP code 21530

What city is ZIP code 21530 in?

ZIP code 21530 is primarily assigned to Flintstone, Maryland.

What county is ZIP code 21530 in?

ZIP code 21530 falls within Allegany County, Maryland.

Is ZIP code 21530 mostly owner-occupied?

82% of occupied units in ZIP code 21530 are owner-occupied, well above the national average.

What is the population of ZIP code 21530?

ZIP code 21530 has an estimated population of 1,783 residents, with a density of 29 people per square mile.

What is the typical home value in ZIP code 21530?

The median home value in ZIP code 21530 is $198,500.

What is the median household income in ZIP code 21530?

The median household income in ZIP code 21530 is $57,115, below the national median of ~$75,000.

What timezone is ZIP code 21530 in?

ZIP code 21530 observes the EST timezone.