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County · code 29143

New Madrid CountyMissouri

New Madrid County is a county in Missouri, with its seat in New Madrid, founded in 1812.

  • Founded1812
  • County seatNew Madrid
  • Named forNew Madrid, Missouri
  • Land area675 sq mi + 22 sq mi water
  • Population16,434 2020 Census
  • Parcels mapped14,764 checked 14 October 2026
Open the free map Click any parcel in New Madrid County: acreage, parcel id, address and who publishes the map. No sign-in.

Updated

Lake, TNStoddardPemiscotMississippiScottFulton, KYDunklin New Madrid Census outline · seat marked

Where it is

New Madrid on the map of Missouri

Missouri has 115 counties and county equivalents, each with its own records office. Shapes with a page are links.

Adair CountyAndrew CountyAtchison CountyAudrain CountyBarry CountyBarton CountyBates CountyBenton CountyBollinger CountyBoone CountyBuchanan CountyButler CountyCaldwell CountyCallaway CountyCamden CountyCape Girardeau CountyCarroll CountyCarter CountyCass CountyCedar CountyChariton CountyChristian CountyClark CountyClay CountyClinton CountyCole CountyCooper CountyCrawford CountyDade CountyDallas CountyDaviess CountyDeKalb CountyDent CountyDouglas CountyDunklin CountyFranklin CountyGasconade CountyGentry CountyGreene CountyGrundy CountyHarrison CountyHenry CountyHickory CountyHolt CountyHoward CountyHowell CountyIron CountyJackson CountyJasper CountyJefferson CountyJohnson CountyKnox CountyLaclede CountyLafayette CountyLawrence CountyLewis CountyLincoln CountyLinn CountyLivingston CountyMcDonald CountyMacon CountyMadison CountyMaries CountyMarion CountyMercer CountyMiller CountyMississippi CountyMoniteau CountyMonroe CountyMontgomery CountyMorgan CountyNewton CountyNodaway CountyOregon CountyOsage CountyOzark CountyPemiscot CountyPerry CountyPettis CountyPhelps CountyPike CountyPlatte CountyPolk CountyPulaski CountyPutnam CountyRalls CountyRandolph CountyRay CountyReynolds CountyRipley CountySt. Charles CountySt. Clair CountySte. Genevieve CountySt. Francois CountySt. Louis CountySaline CountySchuyler CountyScotland CountyScott CountyShannon CountyShelby CountyStoddard CountyStone CountySullivan CountyTaney CountyTexas CountyVernon CountyWarren CountyWashington CountyWayne CountyWebster CountyWorth CountyWright CountySt. Louis cityNew Madrid County New Madrid
Counties of Missouri · New Madrid highlighted

History

Founded in 1812

An old deed may name a county that no longer exists, or a boundary that has since moved.

New Madrid District was created on October 1, 1804, within the District of Louisiana following the Louisiana Purchase, covering territory that extended across multiple present-day states. The district became a county in Louisiana Territory on July 4, 1805, when the District of Louisiana was renamed.

Boundary changes from the Newberry Library, Atlas of Historical County Boundaries; the 5 that matter most are shown first.

  1. 1804
    New Madrid County created New Madrid District (now New Madrid) created within the District of Louisiana. · Terr. Papers U.S., 13: 51-52; U.S. Stat., vol. 2, ch. 38 [1804]/pp. 283-289; Violette, 46-47
  2. 1805
    Renamed New Madrid (Missouri) became a district (county) in Louisiana Territory when the District of Louisiana was renamed Louisiana Territory.
    formerly New Madrid Became A District In Louisiana Territory When the District of Louisiana Was
    · U.S. Stat., vol. 2, ch. 31[1805]/pp. 331-332
  3. 1806
    Gained territory New Madrid District (now New Madrid) gained from Cape Girardeau District (now Cape Girardeau).
    from Cape Girardeau
    · Terr. Papers U.S., 13:541-542; Gov. Proc. 7 June 1806
  4. 1806
    Lost territory New Madrid District (now New Madrid) lost to Cape Girardeau District (now Cape Girardeau).
    to Cape Girardeau
    · Ford, 5-6
  5. 1812
    Lost territory New Madrid District became New Madrid County; New Madrid lost to creation of Non-County Area 1 when its western boundary was redefined as the boundary of the "Osage Purchase". · Terr. Papers U.S., 14:599-601; U.S. Stat., vol. 2, ch. 95[1812]/pp. 743-747; Royce, 676-677, pls. 112, 144
Show all 21 changes (16 more)
  1. 1804
    New Madrid County created New Madrid District (now New Madrid) created within the District of Louisiana. · Terr. Papers U.S., 13: 51-52; U.S. Stat., vol. 2, ch. 38 [1804]/pp. 283-289; Violette, 46-47
  2. 1805
    Renamed New Madrid (Missouri) became a district (county) in Louisiana Territory when the District of Louisiana was renamed Louisiana Territory.
    formerly New Madrid Became A District In Louisiana Territory When the District of Louisiana Was
    · U.S. Stat., vol. 2, ch. 31[1805]/pp. 331-332
  3. 1806
    Gained territory New Madrid District (now New Madrid) gained from Cape Girardeau District (now Cape Girardeau).
    from Cape Girardeau
    · Terr. Papers U.S., 13:541-542; Gov. Proc. 7 June 1806
  4. 1806
    Lost territory New Madrid District (now New Madrid) lost to Cape Girardeau District (now Cape Girardeau).
    to Cape Girardeau
    · Ford, 5-6
  5. 1812
    Lost territory New Madrid District became New Madrid County; New Madrid lost to creation of Non-County Area 1 when its western boundary was redefined as the boundary of the "Osage Purchase". · Terr. Papers U.S., 14:599-601; U.S. Stat., vol. 2, ch. 95[1812]/pp. 743-747; Royce, 676-677, pls. 112, 144
  6. 1813
    Gained territory New Madrid gained from Cape Girardeau, lost to creation of Arkansas (Arkansas).
    from Cape Girardeaufrom Arkansas (Ark.)
    · Mo. Terr. Laws 1813-1814, ch. 99, sec. 1/pp. 293-295
  7. 1815
    Lost territory New Madrid lost to creation of Lawrence (original).
    to Lawrence
    · Mo. Terr. Laws 1814-1815, ch. 128, secs. 1, 9/pp. 354-357
  8. 1819
    Lost territory New Madrid lost to creation of Wayne.
    to Wayne
    · Mo. Terr. Laws 1818-1819, ch. 226, secs. 1, 10/pp. 567-571
  9. 1819
    Exchanged territory New Madrid exchanged with Arkansas Territory when the United States created Arkansas Territory from Missouri Territory. · U.S. Stat., vol. 3, ch. 49[1819]/pp. 493-496
  10. 1822
    Lost territory New Madrid lost to creation of Scott.
    to Scott
    · Mo. Laws 1821-1822, ch. 28, secs. 1, 8/pp. 32-36
  11. 1822
    Boundary clarified Boundary between New Madrid and Scott redefined (no change).
    with Scottno change
    · Mo. Laws 1822, ch. 9, secs. 1-2/p. 15
  12. 1829
    Lost territory New Madrid lost to creation of Stoddard.
    to Stoddard
    · Mo. Laws 1828-1829, ch. 59, secs. 1-3/pp. 71-72
  13. 1835
    Exchanged territory New Madrid exchanged with Stoddard.
    with Stoddard
    · Mo. Laws 1834-1835, priv. and loc., pp. 39-40
  14. 1839
    Changed Boundary between New Madrid and Scott defined (no change).
    Scott
    · Mo. Laws 1838-1839, pub., pp. 25-26
  15. 1841
    Lost territory New Madrid lost to Stoddard.
    to Stoddard
    · Mo. Laws 1840-1841, pub., p. 44
  16. 1849
    Lost territory New Madrid lost to Dunklin.
    to Dunklin
    · Mo. Laws 1848-1849, pub., p. 36
  17. 1851
    Lost territory New Madrid lost to creation of Pemiscot.
    to Pemiscot
    · Mo. Laws 1850-1851, pub., pp. 190-192
  18. 1855
    Lost territory New Madrid lost to Stoddard.
    to Stoddard
    · Mo. Laws Rev., 1854-1855, ch. 41, secs. 79, 94/pp. 484-485, 490-491
  19. 1857
    Changed Boundaries between New Madrid and Mississippi and between New Madrid and Scott defined (no change).
    MississippiScott
    · Mo. Laws 1856-1857, loc., pp. 273, 439-440
  20. 1868
    Exchanged territory New Madrid exchanged with Mississippi.
    with Mississippi
    · Mo. Laws 1868, adj. sess., gen., pp. 16-23
  21. 1872
    Exchanged territory New Madrid exchanged with Stoddard.
    with Stoddard
    · Mo. Laws 1871-1872, adj. sess., gen., pp. 23-24

Land and parcels

What the maps cover in New Madrid

Who publishes each layer, how good it is, and when we last checked.

Official
from the office that keeps the record
Good enough
a reliable statewide or national copy
Fallback
a guide only; check the official record
Missing
nothing public found yet

People and land

New Madrid by the Census

Population
16,434 2020 Census count
Housing units
7,870 2020 Census count
Land area
675 square miles
Water area
22 square miles
People per sq mi
24 population ÷ land area

Source: US Census Bureau, 2020 Census; US Census Bureau, 2020 Gazetteer Files. Not endorsed or certified by the Census Bureau.

Rules and offices

Who to ask before you build, dig or sell

Official county pages only. We link to them; we do not copy them, because they change.

Inside a city or town, permits usually come from that city rather than the county.

Records

Zoning and code

County government

See your own lot on these maps

Open New Madrid County on Parcel Chart's free map and click your parcel. Save it with a free account; the full record of your place (site map, projects, documents) is Pro, in early access.

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Questions

Common questions about New Madrid County

When was New Madrid County founded?
New Madrid County was founded in 1812, and named after New Madrid, Missouri.
What is the county seat of New Madrid County?
The county seat of New Madrid County is New Madrid.
Is there an online parcel map for New Madrid County?
Yes. A public source publishes a parcel map of 14,764 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
Has New Madrid County's boundary or name changed?
New Madrid County was created in 1804. Since then the Atlas of Historical County Boundaries records 17 later changes, chiefly involving Stoddard County, Cape Girardeau County and Arkansas (Ark.) County. It was formerly called New Madrid Became A District In Louisiana Territory When the District of Louisiana Was.
Is my lot in a flood zone?
We do not have flood maps for New Madrid County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.

Nearby

Counties next door