Zip Code 78640
Kyle, Texas — Hays County
📍 ZIP code 78640 is in Kyle, Hays County, Texas.
ZIP code 78640 is located in Kyle, Hays County, Texas. It is a zip code in the Central (CST/CDT) Time Zone with an estimated population of 71,460. The area code for ZIP code 78640 is 512.
Quick Answer
Zip code 78640 is in Kyle, Texas (Hays County). It has a population of 71,460, median household income of $88,533, and median home value of $291,100.
Population
71,460
Income
$88,533
Home Value
$291,100
Climate
96°F / 39°F
About Zip Code 78640
Zip code 78640 is located in Kyle, Texas, within Hays County. Home to approximately 71,460 residents, this area sits at an elevation of 618 ft and falls within the Central (CST/CDT) timezone. The local area code is 512.
The median household income is $88,533 per year, which is above the national median of $70,784. Homes in this zip code have a median value of $291,100, and the cost of living index is 100 (0% below the national average of 100).
Summers average a high of 96°F while winters drop to 39°F. The area receives about 37 in of rain annually. The zip code covers 91.7 square miles of land area and 0.8 square miles of water.
Key Statistics
71,460
$88,533
$291,100
Central (CST/CDT)
512
618 ft
91.7 sq mi
33.3
25,236
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Compare With Nearby Zip Codes
| Metric | 78640 | 78610 | 78656 | 78652 | 78747 | 78748 |
|---|---|---|---|---|---|---|
| City | Kyle, TX | Buda, TX | Maxwell, TX | Manchaca, TX | Austin, TX | Austin, TX |
| Population | 71,460 | 46,685 | 2,953 | 5,012 | 21,757 | 54,942 |
| Median Income | $88,533 | $110,417 | $78,058 | $118,750 | $86,456 | $107,652 |
| Home Value | $291,100 | $379,300 | $194,900 | $480,600 | $395,500 | $434,100 |
| Cost of Living | 100 | 130 | 90 | 161 | 117 | 133 |
| Median Age | 33.3 | 35.8 | 32.6 | 41.9 | 34.9 | 36.5 |
Cost of Living
100 = National Average. Kyle's cost of living is 0% below the national average.
vs. State Avg
Below
Affordability
Affordable
Income-to-Home
3.3x
Demographics
Zip code 78640 has a population of 71,460 people with a median age of 33.3. There are 25,236 housing units in this area.
Racial & Ethnic Composition
Source: U.S. Census Bureau American Community Survey estimates.
Population History
Kyle (78640) population trend from 2010 to 2024
↓ -11.1%Source: U.S. Census Bureau estimates and American Community Survey data.
Climate & Weather
96°F
39°F
37 in
0 in
Kyle experiences hot summers with average highs around 96°F. Winters are mild with lows averaging 39°F. The area receives virtually no snowfall.
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Housing & Economy
Median Home Value
$291,100
Median Household Income
$88,533
With 25,236 housing units across 91.7 square miles, 78640 has a housing density of 275 units per square mile. The home price-to-income ratio is 3.3x.
Location & Geography
Latitude
29.9991°
Longitude
-97.8282°
Land Area
91.7 sq mi
Water Area
0.8 sq mi
Nearby Zip Codes
Zip codes closest to 78640 (Kyle, TX) with distances:
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ZIP Codes with Similar Income Nationwide
The five U.S. ZIP codes whose median household income is closest to 78640's $88,533. A way to compare Kyle to economically similar communities elsewhere in the country.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
ZIP Codes with Similar Demographics
The five U.S. ZIP codes whose racial and ethnic composition most closely matches 78640 (Kyle, TX). Similarity is measured by cosine distance on the five-category ACS demographic vector.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
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People Also Ask
What zip code is Kyle, Texas?
Kyle, Texas uses zip code 78640.
What county is zip code 78640 in?
Zip code 78640 is located in Hays County, Texas.
What is the population of zip code 78640?
The population of zip code 78640 is 71,460 with a median age of 33.3.
Is 78640 in Kyle, Texas?
Yes, zip code 78640 is in Kyle, Hays County, Texas. The area code is 512.
Frequently Asked Questions
What city is zip code 78640 in?
Zip code 78640 is in Kyle, Texas. It is part of Hays County and uses the Central (CST/CDT) timezone.
What is zip code 78640?
Zip code 78640 is a U.S. postal code in Kyle, Texas (Hays County). It has a population of 71,460 and covers 91.7 square miles.
What is the population of zip code 78640?
The population of zip code 78640 (Kyle, TX) is 71,460 with a median age of 33.3. There are approximately 25,236 housing units in this area.
What is the median income in zip code 78640?
The median household income in zip code 78640 (Kyle, TX) is $88,533 per year. The cost of living index is 100 (100 = national average).
What is the average home price in zip code 78640?
The median home value in zip code 78640 (Kyle, TX) is $291,100. The cost of living index is 100 compared to the national average of 100.
What county is zip code 78640 in?
Zip code 78640 is located in Hays County, Texas. The primary city is Kyle.
What is the area code for zip code 78640?
Zip code 78640 in Kyle, TX uses area code 512. It is located in the Central (CST/CDT) timezone.
Is zip code 78640 a good place to live?
Zip code 78640 (Kyle, TX) has a cost of living index of 100 (100 = national average), a median household income of $88,533, and median home values of $291,100. The median age is 33.3. Visit the full page for demographics, climate, and nearby zip code comparisons.
What is the cost of living in zip code 78640?
The cost of living index for zip code 78640 (Kyle, TX) is 100, where 100 represents the national average. This area is at the national average. Median home value: $291,100.
What schools serve zip code 78640?
Zip code 78640 in Kyle, Texas is served by the local school district of Hays County. For specific school information, check your state's department of education or GreatSchools.org.
All demographic data on this page is sourced from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates. ZIP code boundary and delivery data is sourced from the United States Postal Service (USPS). Data is updated periodically and may not reflect the most current figures. Census Bureau ZIP Code Tabulation Areas (ZCTAs) may differ slightly from USPS ZIP code boundaries.
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Data Sources
- Population, income, housing, age, and demographics
- U.S. Census Bureau, American Community Survey 5-Year Estimates, 2019-2023 vintage.
- ZIP to city and county mapping
- USPS and HUD-USPS ZIP-County Crosswalk.
- Time zones and area codes
- IANA tz database and NANPA.
- Elevation
- U.S. Geological Survey National Elevation Dataset (NED), via the USGS Elevation Point Query Service. Mapped to each ZCTA centroid coordinates. Last refreshed 2026-05-19.
- Last refreshed
- 2026-05-18.