Maryland Demographics, ZIP Codes and Area Codes

Maryland is the 18th most populated state in the United states, associated with 46 major cities, 24 counties, 5 NPA codes, 547 standard zip codes, 38 unique zip codes and accommodates 6,161,707 local residents.

Maryland Demographics Summary

Population	6,161,707 residents
Male Population	3,002,896 males
Female Population	3,158,811 females
Male to Female Ratio	951 females per 1,000 males
Land Area	9,707 square miles
White Population	3,154,247
Hispanic or Latino Population	672,905
Black Population	1,841,926
Asian Population	399,736
Total US Natives or Citizens	6,161,707
Total Non US Citizens	440,065
Avg. household income	$129,642
Percapita Income	$49,865
Total Housing units	6,161,707
Vacant Housing units	212,951
Total US Natives or Citizens	331,097,593
Total Non-US Citizens	21,614,904

This population information for Maryland is sourced from 2022 American Community Survey (ACS 5-year) data.

46 Most Populous Cities in Maryland

The 18th most populous state Maryland is a place for 46 most populous cities (having the population of more than 20000 residents) in the United States.

City	ZIP Code	Population
Baltimore, MD	25	584,548
Columbia, MD	3	106,600
Germantown, MD	4	90,210
Silver Spring, MD	16	81,808
Waldorf, MD	4	81,077
Frederick, MD	6	78,390
Ellicott City, MD	3	73,589
Glen Burnie, MD	3	71,427
Gaithersburg, MD	14	69,016
Rockville, MD	10	67,142
Dundalk, MD	2	66,321
Bethesda, MD	5	66,316
Bowie, MD	7	57,922
Towson, MD	5	57,617
Severn, MD	1	56,438
Potomac, MD	2	46,499
Hagers city, MD	7	43,374
Catonsville, MD	2	42,767
Essex, MD	1	40,842
Annapolis, MD	7	40,719
Severna Park, MD	1	40,452
Clinton, MD	1	40,224
Randallstown, MD	2	36,223
Olney, MD	2	35,522
Owings Mills, MD	1	34,999
Montgomery Village, MD	2	34,748
College Park, MD	3	34,416
Pikesville, MD	2	34,101
Salisbury, MD	8	32,960
Pasadena, MD	2	32,161
Middle River, MD	1	31,155
Parkville, MD	1	30,520
Laurel, MD	7	29,581
Crofton, MD	1	29,358
Clarksburg, MD	1	28,337
Reisterstown, MD	1	27,616
Suitland, MD	3	25,839
Fort Washington, MD	2	25,825
Elkridge, MD	3	25,251
Edgewood, MD	1	25,116
Arnold, MD	1	24,825
Greenbelt, MD	3	24,646
Cockeysville, MD	3	23,246
Hyattsville, MD	11	20,851
Westminster, MD	3	20,099
Rosedale, MD	1	20,058

5 Area Codes Used in Maryland

The 18th most populous state Maryland is associated with 5 area (NPA) codes in the United States for dialing/telecommunication purposes.

• 240 Area Code
• 301 Area Code
• 410 Area Code
• 443 Area Code
• 667 Area Code

NPA Overlay Complex in Maryland

• 240/301 
• 410/443/667 

24 Counties of Maryland

The 18th most populous state Maryland consists of 24 counties in the United States.

• Allegany County, MD
• Anne Arundel County, MD
• Baltimore County, MD
• Calvert County, MD
• Caroline County, MD
• Carroll County, MD
• Cecil County, MD
• Charles County, MD
• Dorchester County, MD
• Frederick County, MD
• Garrett County, MD
• Harford County, MD
• Howard County, MD
• Kent County, MD
• Montgomery County, MD
• Prince George, MD
• Queen Anne, MD
• St. Mary, MD
• Somerset County, MD
• Talbot County, MD
• Washington County, MD
• Wicomico County, MD
• Worcester County, MD
• Baltimore city, MD

Adjacent States to Maryland in USA

• District Of Columbia
• Delaware
• Pennsylvania
• Virginia
• West Virginia