Lookup any area code or prefix (NPA/NXX) in our database using our FREE Area Code Finder Below:

For more info
support@area-codes.com
1-800-425-1169

Area Codes that cover ZIP Code 21791

LINWOOD, UNION BRIDGE, MD

Zip Code:	21791	Population:	5,281
Area Code:	410 \| 443 \| 667	Households per Zip Code:	1,907
City:	UNION BRIDGE	Average House Value:	$313,200
State:	MD	Avg. Income Per Household:	$84,848
County:	CARROLL	Persons Per Household	2.77
Latitude:	39.532848	White Population:	5,113
Longitude:	-77.187258	Black Population:	145
Elevation:	512	Hispanic Population:	89
City Alias(es):	LINWOOD UNION BRIDGE	Number of Businesses:	104
		MSA:	8872
		MSA Name:	Washington-Baltimore, DC-MD-VA-WV CMSA
		PMSA:	0720

Area Code	Prefix	Zip Count	Type	Company	Rate Center
410	775	5281	LANDLINE	VERIZON MARYLAND, INC.	UNION BDG
443	247	5281	LANDLINE	CTC COMMUNICATIONS CORP. - MD	UNION BDG
443	937	5281	LANDLINE	TELEPORT COMMUNICATIONS AMERICA, LLC - MD	UNION BDG
667	399	5281	LANDLINE	HD CARRIER LLC	UNION BDG

Indicates an Inactive NPANXX.

Get all NPA NXX records in one easy to use database. Read More.

Only online source to include ZIP Code info, provider company listings, and landline/wireless differentiation.
Instantly download NPANXX data covering the entire US for immediate use (Canada and American Territories included for reference only.)
Easily assign NPANXX codes to each of your sites for automated call routing.
NEW - Additional lat/lon info provided for the center of the serving area - only online source of this valuable information.
Includes inputs from the major telecommunications providers.