Car Washes in St. Mary's County, MD
St. Mary's County, MD has 8 car washes across 2 chains and 6 independents, drawing 1,039 Google reviews with a 1.9% reviewer-reported damage rate. It skews detail shop (63% of locations) and is largely independent-run; its washes rate below the national norm at 4.20★. The BLS counts 2 car-wash employer establishments in the county.
St. Mary's County at a glance
- Car washes
- 8
- 75% independent
- Top operator
- Magic Tunnel Car Wash
- 1 location
- Avg rating
- 4.20★
- -0.22 vs U.S. norm
- Damage rate
- 1.9%
- 1.2× U.S. norm
- Top format
- detail shop
- 63% of classified
- BLS establishments
- 2
- employer businesses (QCEW)
Market Quality snapshot
- Population
- 114,372
- ACS 2023 5-year
- Households
- 41,743
- ACS 2023 5-year
- Residents per wash
- 14,297
- 7.4× the national MSA median — lighter supply
- Express tunnels per 10K households
- 0.5
- below the ~0.5 expandable band · classified sites
Source: U.S. Bureau of Labor Statistics, QCEW (private, NAICS 811192). Counts employer establishments — a narrower universe than all physical wash locations. “—” = withheld by BLS for disclosure.
Format mix in St. Mary's County, MD
Customer-experience signals
Net sentiment (−1 to +1) across 412 AI-analyzed reviews. Positive = more praise than complaints.
Top operators in St. Mary's County, MD
| Operator | Locations | Avg rating |
|---|---|---|
| Magic Tunnel Car Wash | 1 | 4.60 |
| Splash In | 1 | 4.80 |
Car washes in St. Mary's County, MD
| Car wash | Rating | Reviews |
|---|---|---|
| Cheseldine Car Wash | 3.7 | 376 |
| Magic Tunnel Car Wash | 4.6 | 200 |
| Splash In | 4.8 | 162 |
| Pro-Gloss Auto Solutions | 5.0 | 104 |
| California Car Wash | 2.8 | 101 |
| SOMD DETAILING & WINDOW TINT | 5.0 | 44 |
| The Detail Company | 4.8 | 40 |
| One on One Auto Detailing | 4.7 | 12 |
About St. Mary's County, MD
How many car washes are in St. Mary's County, MD?
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What is the most common type of car wash in St. Mary's County, MD?
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Data as of 2026-09-26. Pick a format and click Copy.
WashIndex. (2026, September 26). Car Washes in St. Mary's County, MD — Market Analysis & Statistics. https://washindex.com/car-wash-counties/st-mary-s-county-md
WashIndex. "Car Washes in St. Mary's County, MD — Market Analysis & Statistics." WashIndex. Last modified September 26, 2026. https://washindex.com/car-wash-counties/st-mary-s-county-md.
"Car Washes in St. Mary's County, MD — Market Analysis & Statistics." WashIndex, Sep. 26, 2026, https://washindex.com/car-wash-counties/st-mary-s-county-md.
@misc{washindex_car_wash_counties_st_mary_s_county_md_2026,
title = {{Car Washes in St. Mary's County, MD — Market Analysis & Statistics}},
author = {{WashIndex}},
year = {2026},
month = {Sep},
url = {https://washindex.com/car-wash-counties/st-mary-s-county-md},
urldate = {2026-09-26},
} Per-location car-wash data for St. Mary's County, MD (format, operators, AI-scored review signals) joined to the county's official BLS footprint. See the Lexington Park metro analysis · methodology. Free to cite with attribution to WashIndex.