Sussex County, Delaware
Millsboro, Delaware
Millsboro is an incorporated municipality in Sussex County, Delaware. The 2020 Census counted 6,863 residents. Sussex County lists Millsboro among its 25 municipalities, and the town's official website is linked below. SussexCounty.ai is an independent site and is not the county government.
Key facts
- Type
- Incorporated municipality
- County
- Sussex County, Delaware
- 2020 population
- 6,863 (source: U.S. Census Bureau, 2020 Census)
- Official website
- https://www.millsboro.org/
- Current officials
- See the town website
Ask SussexCounty.ai
Look up Sussex County building permits by PIN on the permits page. Official records are kept by Sussex County at sussexcountyde.gov.
Go deeper on Millsboro
- Land use and zoning (17 questions)
- People and housing (14 questions)
- History and events (12 questions)
- Schools, services and getting around (15 questions)
- Weather, flooding and hazards (18 questions)
SussexCounty.ai data
As of 2026-08-09, SussexCounty.ai counts 4,040 tax parcels in Millsboro, covering 3,056.0 mapped acres (median parcel 0.143 acres). Source: SussexCounty.ai, Parcels by jurisdiction, compiled from Sussex County GIS parcel records. CC BY 4.0.
Local coverage
For civic coverage of Millsboro, see Millsboro on The Sussex Ledger. The Sussex Ledger is a publication of The Conscient Group LLC, which also publishes SussexCounty.ai.
Terms used in Sussex County property records
Tax map parcel number, zoning district, building permit, FEMA flood zone and realty transfer tax. See the full Sussex County glossary, official sources and weather and hazard sources.
Questions about Millsboro
The basics
Is Millsboro a town, a city or a census-designated place?
Millsboro is an incorporated municipality, not a census-designated place. The U.S. Census Bureau lists it as Millsboro town, Delaware, and Sussex County lists it among its cities and towns.
What county is Millsboro, Delaware in?
Millsboro is in Sussex County, Delaware.
What was the population of Millsboro in the 2020 Census?
The 2020 Census counted 6,863 residents in Millsboro (U.S. Census Bureau).
How many tax parcels are in Millsboro?
As of 2026-08-09, SussexCounty.ai counts 4,040 tax parcels in Millsboro (Parcels by jurisdiction).
Who issues building permits in Millsboro?
Sussex County issues building permits countywide, including inside municipalities, per the county building permits page. Check with the town as well for any town requirements.
Government, zoning and services
Where is Millsboro Town Hall?
The town lists its address as 322 Wilson Highway, Millsboro, DE 19966, phone (302) 934-8171. Source: millsboro.org, millsboro.org.
When does Millsboro Town Council meet?
The town site does not state a standing schedule. Meetings are streamed on the Town of Millsboro Meetings YouTube channel and agendas are on the Agendas and Minutes page. Source: millsboro.org, millsboro.org.
Does Millsboro have its own code and zoning rules?
Yes. The Town Charter & Code is on ecode360 (ecode360.com/MI1671), and the town site publishes a Zoning Map, Comprehensive Plan and a Board of Adjustment. Source: millsboro.org, millsboro.org.
Who provides water and sewer in Millsboro?
The town. Its site refers to the "Town of Millsboro Water Department" and "Town of Millsboro Sewer Department." Meters are read quarterly. Source: millsboro.org, millsboro.org.
Who collects trash in Millsboro?
No one on the town's behalf. The town FAQ says "the town does not provide trash and recycling services" and residents must arrange their own. Source: millsboro.org.
History and lore
How did Millsboro get its name?
Around 1792 the headwaters of the Indian River were dammed at Rock Hole to power mills, and the settlement was first called Rock Hole Mills. It became Millsborough in 1809, and merged with the village of Washington in 1837 to take the name Millsboro. Source: archives.delaware.gov.
When was Millsboro incorporated?
Millsboro was incorporated in 1893 as "The Commissioners of the Town of Millsboro," and re-incorporated in 1909 and 1976. Source: archives.delaware.gov.
What weather records are tied to Millsboro?
The Delaware Climate Office lists Delaware's all-time record high as 110 degrees F, set in Millsboro on July 21, 1930, and its all-time record low as minus 17 degrees F, also in Millsboro, on January 17, 1893. Both are credited to NOAA station 076020. Source: climate.udel.edu.
What is Millsboro known for historically?
It became a trading center for lumber and agriculture, and a rail line reached town just after the Civil War, which spurred growth. Source: archives.delaware.gov.
What historic sites are in or near Millsboro?
National Register of Historic Places listings in Millsboro include Harmon School, the Isaac Harmon Farmhouse, Harmony Church and the Robert Davis Farmhouse (all 1979). The Godwin School, a one-teacher schoolhouse built in 1897 west of Millsboro off State Route 20, was added in 2018. The Indian Mission Church near Harbeson was listed April 26, 1979. Source: nps.gov, history.delaware.gov, archives.delaware.gov.
Events, holidays and occasions
When is the Nanticoke Indian Powwow?
The Nanticoke Indian Powwow is held on a September weekend in Millsboro, with dance, drumming and more than 40 Native American vendors, per Southern Delaware Tourism. No 2027 dates were found. Source: visitsoutherndelaware.com, nanticokeindians.org.
Does Millsboro have fireworks?
Yes. Millsboro's fireworks are held in late June, not July 4. In 2026 they were listed for June 27 at 9 p.m. at the Little League fields, with a rain date of June 28. Tourism lists the event as Stars and Stripes in June. Source: wdel.com, visitsoutherndelaware.com.
Is there a farmers market in Millsboro?
The Millsboro Farmers Market meets Saturdays from 8 a.m. to noon, May 2 to September 26 in 2026. Source: agriculture.delaware.gov.
When is the Millsboro Christmas parade?
The Town of Millsboro holds a Christmas parade in early December followed by a tree lighting. The town website was taking 2026 parade and holiday market registrations in October 2026 but did not show a date in the text we could read. Source: millsboro.org, wmdt.com.
What other annual events does Millsboro hold?
Southern Delaware Tourism lists the Big Saturday Car Show (August) along with the Powwow (September) and Stars and Stripes (June). Source: visitsoutherndelaware.com.
Weather, geography and hazards
What is the climate like in Millsboro, Delaware?
Using NOAA 1991 to 2020 climate normals from the Georgetown Delaware Coastal Airport station, the nearest of the stations we use, the average January low is 28.6 degrees F and the average July high is 87.7 degrees F. Annual precipitation averages 43.88 inches. The station is not inside Millsboro, so readings in town can differ a little, especially near the water. Source: ncei.noaa.gov.
How much snow does Millsboro get per year?
The Georgetown airport normals table we use for Millsboro does not publish snowfall. The nearest station we fetched with a 1991 to 2020 snowfall normal is the Lewes station, at 10.5 inches a year. Treat that as a regional reference, not a measurement for Millsboro. Source: ncei.noaa.gov.
Is Millsboro in a flood zone?
Part of Millsboro may sit in a FEMA Special Flood Hazard Area, and the answer depends on the address, so we do not give a town-wide yes or no. The USGS elevation at the town's Census center point is about 29 feet. Look up a specific property in the FEMA Flood Map Service Center and the DNREC Delaware Flood Planning Tool. Source: msc.fema.gov, floodplanning.dnrec.delaware.gov, epqs.nationalmap.gov.
Is Millsboro in a hurricane evacuation zone?
Delaware labels hurricane evacuation zones A, B, C and D, and describes them as low-lying areas susceptible to flooding and storm surge. The state page does not list communities by zone, so we cannot say which zone Millsboro or a given address falls in. Use the Know Your Zone lookup tool or interactive map to check an address. Source: preparede.org, dema.delaware.gov.
What body of water is Millsboro on?
Millsboro sits at the headwaters of the Indian River. The Delaware Public Archives says the river was dammed there around 1792 at a place called Rock Hole for a grist mill and sawmill. Source: archives.delaware.gov.
Schools, parks and getting around
What school district serves Millsboro?
Millsboro is in the Indian River School District, whose office is in Selbyville. Schools with Millsboro addresses include East Millsboro Elementary (29346 Iron Branch Road) and Long Neck Elementary (26064 School Lane). Source: irsd.net, explore.education.delaware.gov, explore.education.delaware.gov.
What ZIP code covers Millsboro?
Millsboro uses ZIP code 19966. Town Hall is at 322 Wilson Highway, Millsboro, DE 19966. Source: millsboro.org.
Is there a public library in Millsboro?
Yes. Millsboro Public Library is at 217 W. State St. Source: sussexcounty.lib.de.us.
What major roads serve Millsboro?
US 113 is a principal arterial through the Millsboro area, and DE 24 and DE 20 (Hardscrabble Road) also serve it. DelDOT's North Millsboro Bypass includes a connector between US 113 and DE 24 and an interchange at US 113 and DE 20. DelDOT is also studying US 113 south of Millsboro. Source: deldot.gov, deldot.gov.
Is there public transit in Millsboro?
A 2018 state release lists DART First State Route 215 serving Millsboro (Mid-Sussex Shopping Center), the Long Neck area and Mountaire Farms, Monday through Saturday. Check dartfirststate.com for current service. Source: news.delaware.gov.