78666 Real Estate Details

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78666 Zip Code Real Estate Statistics

Total Properties
364
Avg. Size in Sq. Ft.
2,190
Avg. Age in Years
0.3
Average Days on Site
126
Minimum Price
$1,150
Maximum Price
$4,250,000
Avg. Price
$528,019
Avg. Price per Sq. Ft.
$237
Recently Listed in 78666 Zip Code
$278,990
Central Texas MLS IDX Logo
3bds 2ba1,396sqftPending
237 Raymondville Path, San Marcos, TX 78666
MLS #: 615140
Dr Horton-Austin
112 South Plains Road Property Photo 1
Price Reduced
$298,990
San Antonio Board of REALTORS® IDX Logo
3bds 2ba1,566sqftPrice Change
112 South Plains Road, San Marcos, TX 78666
MLS #: 2007019
D.R. Horton-Texas, LTD
$309,990
San Antonio Board of REALTORS® IDX Logo
4bds 2ba1,788sqftBack On Market
108 South Plains Rd, San Marcos, TX 78666
MLS #: 1962578
D.R. Horton-Texas, LTD
$264,000
Central Texas MLS IDX Logo
3bds 2ba939sqftActive
301 Armstrong Street, San Marcos, TX 78666
MLS #: 623861
Century 21 Randall Morris & As
$449,000
Central Texas MLS IDX Logo
2bds 2ba1,708sqftActive
108 Dreaming Plum Lane, San Marcos, TX 78666
MLS #: 622760
Realty Texas LLC
$349,000
Central Texas MLS IDX Logo
3bds 3ba1,750sqftActive
102 Elm Hill Court, San Marcos, TX 78666
MLS #: 619437
Keller Williams Realty
$370,000
Central Texas MLS IDX Logo
3bds 2ba1,800sqftActive
1117 Blue Oak Boulevard, San Marcos, TX 78666
MLS #: 618770
Realty Texas LLC
$649,000
Central Texas MLS IDX Logo
3bds 3ba2,505sqftActive
309 Hopping Peach Street, San Marcos, TX 78666
MLS #: 613388
Realty Texas LLC
$625,000
Central Texas MLS IDX Logo
-Units$-/Unit3,712sqftActive
560-566 Crest Circle Drive, San Marcos, TX 78666
MLS #: 623898
Andrew Phillips, Broker
$389,900
Central Texas MLS IDX Logo
2bds 3ba1,270sqftActive
103 Lively Lane A, San Marcos, TX 78666
MLS #: 617279
Carson Properties
$359,900
Central Texas MLS IDX Logo
2bds 3ba1,270sqftActive
103 Lively Lane B, San Marcos, TX 78666
MLS #: 576172
Carson Properties
$625,000
Central Texas MLS IDX Logo
-Units$-/Unit3,712sqftActive
540-546 Crest Circle Drive, San Marcos, TX 78666
MLS #: 623891
Andrew Phillips, Broker

Demographic Information

Guadalupe County

4,379

Populations as of 2026

1,781

Total Labor Force

$40,149

Median Household Income

$30,367

Per Capita Income

42

Median Age

3

Average Household Size

23.8%

High School Graduate

8.3%

Bachelor Degree Or Higher

Population

2026 Estimate (V2026) 4,379

Age Distribution (Years Old)

0 to 4 3.4%
5 to 17 18%
18 to 64 58%
65 and Older 20.6%

Gender

Male 58.2%
Female 41.8%

Computer and Internet Use

Households with a computer 33.1%
Households with a broadband Internet subscription 33.1%

Language

English or Second Language, Age 5+ 47%
English is First Language, Age 5+ 49.6%

Veterans

Veterans 250

Housing

Total Housing Units 2,156
Households 1,451
Average Household Size 3 people
Owner-Occupied 26%
Multi-Family 0.2%
Owner-Occupied Median Value $107,200
Median selected monthly owner costs - with a mortgage $1,530
Median selected monthly owner costs - without a mortgage $400
Median Gross Rent $515

Year at Residence

1 Year or More 10%
Less Than 1 Year 90%

Business and Employment

Private non-farm Establishments -
Private non-farm Employment -
Nonemployer Establishments 193
Number of Firms -

Business Production

Value of Shipments -
Wholesale Trade -
Retail Trade -
Retail Sales Per Capita -
Accommodation and Food Services -
The American Community Survey (ACS) is an ongoing survey that provides data every year - giving communities the current information they need to plan investments and services. The ACS covers a broad range of topics about social, economic, demographic, and housing characteristics of the U.S. population. Much of the ACS data provided on the Census Bureau's Web site are available separately by age group, race, Hispanic origin, and sex. Summary files, Subject tables, Data profiles, and Comparison Summary read more
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