Monarch Mill is a community in Union County, South Carolina, home to about 1,822 people across 5.6 square miles. It has no ZIP code of its own: it’s part of 29379.
Homes sold for a median of $113 per square foot in the three months ending August 2026, a seller’s market.
Mostly Union; part is in Monarch Mill
Each card is that ZIP code’s whole market, including any part outside Monarch Mill. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Monarch Mill’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Charlotte Douglas International Airport (CLT)51 miles away |
|---|---|
| Closer regional airport | Greenville-Spartanburg International Airport (GSP)36 miles away |
| Nearest city of 250,000+ | Charlotte, NC56 miles away |
| Nearest city of 1 million+ | Philadelphia, PA510 miles away |
Straight-line distances from the center of Monarch Mill; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Monarch Mill had 1,584 residents in the 2020 census, down 18% since 2000.
It’s the 210th largest of 474 towns in South Carolina by population.
Union County grew from 25,501 residents in 1900 to 27,244 in 2020.
Union County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 92°F in summer, and winter lows average 31°F. About 44.6 inches of rain and melted snow fall in a typical year, with about 3 inches of snow.
Source: NOAA 1991–2020 climate normals, Santuck, SC weather station (9 miles away).
5,632 jobs at 418 businesses in Union County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
81 doctors and other health care providers list an office in Monarch Mill.
Nearest hospitals
Providers with an office here
| Primary care doctors | 10 |
|---|---|
| Specialist doctors | 7 |
| Dentists | 7 |
| Nurse practitioners and physician assistants | 22 |
| Mental health providers | 28 |
| Physical and occupational therapists | 3 |
| Optometrists | 1 |
| Chiropractors | 3 |
| Pharmacies | 4 |
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances; providers from the CMS National Plan and Provider Enumeration System (NPPES), by practice address and primary specialty.
Parks (7 nearby)
Grocery stores (2 nearby)
Libraries (1 nearby)
Museums (1 nearby)
Counts are within about 2 miles of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
Public schools here are run by Union 01. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Foster Park ElementaryUnion | Pre-K–5 | 430 | Public | 0.6 mi |
| Monarch ElementaryUnion | Pre-K–5 | 442 | Public | 1.4 mi |
| Sims MiddleUnion | 6–8 | 606 | Public | 3.3 mi |
| Union County Career and Technology CenterUnion | 9–12 | — | Career and Technical | 1.9 mi |
| Union County HighUnion | 9–12 | 1,024 | Public | 1.8 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools. Listed by address; we don’t rate schools.
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Shares ZIP codes with Union.
Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.