Which ZIP code in St. Mary's County has the highest share of owner-occupied homes?

20620 (Callaway), at 96.4% (±5.4%), 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 highest homeownership in St. Mary's County, MD

These are the 11 ZIP codes in St. Mary's County with the highest share of owner-occupied homes, out of 11 with at least 1,000 residents. 20620 (Callaway, 96.4%), 20622 (Charlotte Hall, 95.1%) and 20659 (Mechanicsville, 88.6%) 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 highest homeownership in St. Mary's County

Rank	ZIP	Mailing city	Owner-occupied homes	Residents	Households	Residential mailboxes
1	20620	Callaway	96.4% ±5.4%	1,115	389	476
2	20622	Charlotte Hall	95.1% ±2.8%	5,185	1,489	1,585
3	20659	Mechanicsville	88.6% ±3.3%	24,324	8,300	8,521
4	20636	Hollywood	87.8% ±4.8%	10,486	3,324	4,096
5	20618	Bushwood	83.4% ±12.7%	1,705	656	315
6	20650	Leonardtown	78.7% ±4.6%	16,094	5,642	5,712
7	20690	Tall Timbers	75.3% ±16.8%	1,077	478	361
8	20634	Great Mills	65.4% ±9.5%	7,088	2,694	2,820
9	20619	California	64.5% ±5.5%	14,212	5,719	6,282
10	20653	Lexington Park	57.4% ±4.4%	26,852	11,028	10,223
11	20670	Patuxent River	0.0% ±9.2%	2,046	439	582

How we ranked them

Ranked by the share of occupied homes that are owner-occupied (ACS 5-year estimates, 2020–2024). ZIP codes need at least 1,000 residents to be ranked; 11 of 27 qualify.

Which of these to mail, and why

Homeowners make the decisions about roofs, HVAC, lawns, solar and insurance. A high owner share means fewer pieces wasted on renters who can't hire the work.

The top five ZIP codes on this list hold 14,158 households, on 27 carrier routes with 14,993 residential mailboxes. Open any of them on the route map to see each carrier route's own figures before you choose.

Open 20620 on the EDDM route map

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Frequently asked questions

Which ZIP code in St. Mary's County has the highest share of owner-occupied homes?: 20620 (Callaway), at 96.4% (±5.4%), among 11 ZIP codes with at least 1,000 residents.
How is this ranking calculated?: Ranked by the share of occupied homes that are owner-occupied (ACS 5-year estimates, 2020–2024).
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.