Micro is a town in Johnston County, North Carolina, home to about 573 people across 0.4 square miles. Its ZIP code is 27555.
Homes sold for a median of $205 per square foot in the three months ending August 2026, a seller’s market.
Each card is that ZIP code’s whole market, including any part outside Micro. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Micro’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Raleigh-Durham International Airport (RDU)39 miles away |
|---|---|
| Nearest city of 250,000+ | Raleigh, NC31 miles away |
| Nearest city of 1 million+ | Philadelphia, PA350 miles away |
Straight-line distances from the center of Micro; 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.
Micro had 458 residents in the 2020 census, up 1% since 2000.
It’s the 558th largest of 771 towns in North Carolina by population.
Johnston County grew from 32,250 residents in 1900 to 215,999 in 2020.
Johnston 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 49.5 inches of rain and melted snow fall in a typical year, with about 1 inches of snow.
Source: NOAA 1991–2020 climate normals, Smithfield, NC weather station (8 miles away).
49,067 jobs at 4,151 businesses in Johnston County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
Nearest hospitals
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances.
Grocery stores
Libraries
Theaters and performance venues
Counts are within about 1 mile 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 Johnston County Public Schools. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Micro ElementaryMicro | Pre-K–5 | 404 | Public | 0.4 mi |
| North Johnston MiddleMicro | 6–8 | 598 | Public | 0.3 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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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.