Which ZIP code in St. Mary's County has the highest share of residents who moved in during the past year?

20670 (Patuxent River), at 24.7%, among 11 ZIP codes with at least 1,000 residents.

Why are some ZIP codes missing?

ZIP codes with fewer than 1,000 residents are left out because their survey estimates swing too much to rank, and so are ZIP codes where the Census Bureau did not publish this figure.

ZIP codes with the most new movers in St. Mary's County, MD

These are the 11 ZIP codes in St. Mary's County with the highest share of residents who moved in during the past year, out of 11 with at least 1,000 residents. 20670 (Patuxent River, 24.7%), 20619 (California, 20.6%) and 20634 (Great Mills, 18.7%) lead the list. There is no single "best" ZIP code in St. Mary's County; the right one depends on who you want to reach, so the same ZIP codes are ranked several ways below.

ZIP codes with the most new movers in St. Mary's County

Rank	ZIP	Mailing city	Moved in the past year	Residents	Households	Residential mailboxes
1	20670	Patuxent River	24.7%	2,046	439	582
2	20619	California	20.6%	14,212	5,719	6,282
3	20634	Great Mills	18.7%	7,088	2,694	2,820
4	20653	Lexington Park	13.9%	26,852	11,028	10,223
5	20650	Leonardtown	12.4%	16,094	5,642	5,712
6	20618	Bushwood	11.1%	1,705	656	315
7	20636	Hollywood	8.6%	10,486	3,324	4,096
8	20659	Mechanicsville	6.5%	24,324	8,300	8,521
9	20620	Callaway	6.1%	1,115	389	476
10	20622	Charlotte Hall	5.1%	5,185	1,489	1,585
11	20690	Tall Timbers	2.2%	1,077	478	361

How we ranked them

Ranked by the share of residents (age 1 and over) who lived in a different home a year earlier (ACS Data Profile, 2020–2024). No margin of error is published for this share in our files. ZIP codes need at least 1,000 residents to be ranked; 11 of 27 qualify.

Which of these to mail, and why

New residents are still choosing a dentist, a gym, a pizza place and a lawn service. ZIP codes with high turnover give a welcome offer more people to work on each year.

The top five ZIP codes on this list hold 25,522 households, on 41 carrier routes with 25,619 residential mailboxes. Open any of them on the route map to see each carrier route's own figures before you choose.

Open 20670 on the EDDM route map

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Businesses that mail these ZIP codes

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Frequently asked questions

Which ZIP code in St. Mary's County has the highest share of residents who moved in during the past year?: 20670 (Patuxent River), at 24.7%, among 11 ZIP codes with at least 1,000 residents.
How is this ranking calculated?: Ranked by the share of residents (age 1 and over) who lived in a different home a year earlier (ACS Data Profile, 2020–2024). No margin of error is published for this share in our files.
Why are some ZIP codes missing?: ZIP codes with fewer than 1,000 residents are left out because their survey estimates swing too much to rank, and so are ZIP codes where the Census Bureau did not publish this figure.

This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.