RANKING · 2020 CENSUS · 500 SHOWN OF 6,805

Newest housing stock, US cities · 2020

US cities ranked by median year housing was built (2020 ACS). Thompson's Station, Tennessee leads at 2013. 6,805 cities qualify in total. Cities with fewer than 5,000 residents are excluded. Texas carries 8 of the top 25 entries.

Flip the list · Oldest housing stock, US cities →

All statesPop > 5KAll rankings

SAME RANKING BYCounties States Metros ZIP codes

YEAR1990 2010 2020 2024

RANKPLACESTATEPOPMEDIAN YEAR BUILTVS 1990

USUnited States331,449,2811977–

01Thompson's Station, TNTN9,4692013–

02Horizon West, FLFL67,4162013–

03Briar Chapel, NCNC6,0492013–

04Iowa Colony, TXTX20,5032013+2%

05Sonterra, TXTX10,5632013–

06Timnath, COCO11,6002013+3%

07Watford City, NDND6,3782013+2%

08Hardeeville, SCSC16,4592012+2%

09Balm, FLFL7,1812012–

10Manor, TXTX23,0702012+2%

11Prosper, TXTX45,6052012+2%

12Whitestown, ININ15,7672012+4%

13Fulton, MDMD5,6772012–

14Cave Springs, ARAR6,7012012+3%

15Paloma Creek South, TXTX8,8602012–

16Loudoun Valley Estates, VAVA10,2712012–

17Bee Cave, TXTX8,4642011+2%

18Buda, TXTX16,1662011+2%

19Melissa, TXTX29,9692011+2%

20Triana, ALAL5,2442011+2%

21Rolesville, NCNC12,8392011+2%

22Youngsville, LALA19,9802011+2%

23Nolensville, TNTN15,7892010+2%

24Lakewood Ranch, FLFL43,9452010–

25Herriman, UTUT63,2822010–

26Jessup, MDMD9,9312010+2%

27Holly Ridge, NCNC5,9082010+2%

28Heartland, TXTX10,6072010–

29Freeport, FLFL7,5432010+2%

30Cottleville, MOMO6,7172010+1%

31Fate, TXTX29,0072009+2%

32Northlake, TXTX12,0362009+2%

33Saratoga Springs, UTUT61,3972009–

34Travis Ranch, TXTX9,0252009–

35Clarksburg, MDMD30,4872009–

36Belterra, TXTX6,9782009–

37Brambleton, VAVA24,5372009–

38Queen Creek, AZAZ89,7702009+1%

39Mountain House, CACA25,3152009–

40Fish Hawk, FLFL26,1862008–

41Leander, TXTX91,1322008+1%

42Viera West, FLFL17,9842008–

43Providence, TXTX12,4982008–

44Grayson, GAGA5,5692008+1%

45Selma, TXTX11,9552008+1%

46Bluffdale, UTUT19,5062008+2%

47Pingree Grove, ILIL12,5452008+3%

48The Pinehills, MAMA5,2822008–

49Scenic Oaks, TXTX10,5692008+1%

50Savannah, TXTX6,4692008–

51Camino Tassajara, CACA5,8312008–

52Bluffton, SCSC36,8072008+2%

53Stone Ridge, VAVA16,6032008–

54Star, IDID20,8742008–

55Tiffin, IAIA7,1562008+2%

56Lavon, TXTX11,8882007+2%

57Little Elm, TXTX62,7272007+1%

58Eagle Mountain, UTUT66,5572007–

59Ridgefield, WAWA16,1322007+3%

60Fairwood, MDMD7,5262007–

61Spout Springs, NCNC11,2422007–

62Kyle, TXTX69,9172007+2%

63Hutto, TXTX46,0482007+3%

64Leesylvania, VAVA21,6322007–

65French Valley, CACA45,2692007–

66Progress, FLFL10,4502007–

67Urbana, MDMD14,2602007–

68Ocean Pointe, HIHI17,0852007–

69Pike Road, ALAL11,8992007–

70Groveland, FLFL25,5262007+2%

71Volo, ILIL6,8052007–

72McCordsville, ININ13,0942007+2%

73Waukee, IAIA34,8902007+2%

74Addis, LALA7,6792007+2%

75Maize, KSKS7,8532007+2%

76Waxhaw, NCNC23,1402007+2%

77Buckeye, AZAZ125,4452006+2%

78Spring Hill, TNTN61,3362006+2%

79Celina, TXTX64,4272006+2%

80Frisco, TXTX236,9552006+1%

81Manvel, TXTX20,6992006+2%

82Oakleaf Plantation, FLFL32,0702006–

83Mont Belvieu, TXTX10,6732006+2%

84The Villages, FLFL83,4982006–

85World Golf, FLFL26,0772006–

86Braselton, GAGA18,4962006+2%

87Princeton, TXTX43,5242006+2%

88Leonardtown, MDMD5,0332006+2%

89Vail, AZAZ16,3152006–

90Eastvale, CACA70,5942006–

91Meridian, COCO5,6342006–

92Breinigsville, PAPA7,7692006–

93Anna, TXTX35,2452006+2%

94Lantana, TXTX12,7662006–

95Cibolo, TXTX39,0192006+1%

96Brock Hall, MDMD13,6152006–

97Maricopa, AZAZ78,3622006–

98Ward, ARAR7,2582006+2%

99Johnstown, COCO22,4332006+2%

100Bondurant, IAIA9,6472006+2%

101Firestone, COCO20,1292006+2%

102Frederick, COCO18,2412006+2%

103Wentzville, MOMO49,4952006+2%

104Leland, NCNC35,7312006+2%

105Marana, AZAZ65,5232005+1%

106Arlington, TNTN15,7032005+2%

107Fairview, TXTX10,9132005+1%

108Forney, TXTX41,6582005+1%

109Millsboro, DEDE7,8902005+2%

110Davenport, FLFL18,1102005+2%

111Lely Resort, FLFL8,5822005–

112Wimauma, FLFL15,2662005+1%

113South Jordan, UTUT87,6142005+1%

114West Haven, UTUT25,6272005–

115Huntertown, ININ11,6002005+2%

116Four Corners, MTMT5,7912005–

117Holly Springs, NCNC50,2882005+2%

118St. James, NCNC7,3182005–

119Timberwood Park, TXTX35,4132005+1%

120Carolina Forest, SCSC26,2632005–

121Corona de Tucson, AZAZ9,5662005–

122Todd Creek, COCO5,3792005–

123San Tan Valley, AZAZ109,1892005–

124Plumas Lake, CACA9,4182005–

125Summerlin South, NVNV31,3542005–

126Princeton, FLFL42,6252005+1%

127Gainesville, VAVA18,1962005–

128Enterprise, NVNV240,4642005+1%

129Chelsea, ALAL17,7162005+2%

130Franklin Center, NJNJ6,6462005–

131Valencia West, AZAZ14,7282005+2%

132South Riding, VAVA34,3522005–

133Severance, COCO11,8412005+3%

134Wellington, COCO12,1692005+2%

135Flowery Branch, GAGA13,1102005+1%

136Pooler, GAGA32,7442005+2%

137Port Wentworth, GAGA17,6042005+3%

138Calera, ALAL18,9922005+2%

139Goodyear, AZAZ125,3592005+2%

140Erie, COCO40,9042005+3%

141Holly Springs, GAGA20,2612005+1%

142Fuquay-Varina, NCNC48,5362005+2%

143Harrisburg, NCNC20,7422005+2%

144Happy Valley, OROR28,9162004+2%

145Harrisburg, SDSD10,4052004+2%

146Medina, TNTN5,8132004+2%

147Mount Juliet, TNTN45,1722004+1%

148Oakland, TNTN10,8352004+2%

149Aubrey, TXTX9,0662004+2%

150Middletown, DEDE25,7982004+2%

151Apollo Beach, FLFL33,3552004+1%

152Clermont, FLFL52,8122004+2%

153Meadow Woods, FLFL42,8522004+1%

154McKinney, TXTX236,0012004+2%

155McLendon-Chisholm, TXTX5,6292004+1%

156Orangetree, FLFL6,0842004–

157Poinciana, FLFL75,0682004+1%

158Murphy, TXTX20,9852004+1%

159Wildwood, FLFL19,4362004+1%

160Penitas, TXTX6,4952004+1%

161Roanoke, TXTX10,9312004+1%

162Royse City, TXTX28,3072004+2%

163McDonough, GAGA33,3952004+2%

164Wylie, TXTX63,8422004+1%

165Highland, UTUT21,5712004+1%

166Lehi, UTUT95,3132004+2%

167Nibley, UTUT8,9752004+2%

168Washington, UTUT37,1072004+1%

169Airway Heights, WAWA11,8112004+2%

170Snoqualmie, WAWA13,6402004+3%

171Union, KYKY7,9372004+1%

172Fort Bliss, TXTX11,4602004+2%

173Four Corners, TXTX11,6922004–

174Hornsby Bend, TXTX12,3672004–

175Murillo, TXTX8,8832004–

176Steiner Ranch, TXTX18,6192004–

177Fort Lee, VAVA8,9932004+2%

178Centerton, ARAR27,1762004+2%

179Kuna, IDID31,5252004+2%

180California Polytechnic State University, CACA7,9152004–

181Syracuse, UTUT39,9092004+2%

182Sienna, TXTX24,9922004–

183Marvin, NCNC7,0402004–

184Ladera Ranch, CACA23,7932004–

185Anthem, AZAZ22,5842004–

186Riverview, FLFL113,6972004+1%

187Lansdowne, VAVA12,3282004–

188Linton Hall, VAVA41,8762004–

189Polk City, IAIA6,6302004+2%

190Westfield, ININ66,2582004+2%

191Gardere, LALA12,2232004+1%

192Fort Mill, SCSC38,6732004+2%

193Highland Lakes, ALAL5,8662004–

194Kaneohe Base, HIHI10,9192004–

195Kapolei, HIHI22,2322004–

196Naranja, FLFL15,7962004+2%

197White Knoll, SCSC8,3102004–

198Sahuarita, AZAZ37,6942004–

199Beaumont, CACA60,8352004+2%

200Fresno, TXTX24,5602004+1%

201Lochbuie, COCO8,7762004+1%

202Windsor, COCO43,8402004+2%

203Lovejoy, GAGA12,9292004+1%

204Woodstock, GAGA39,8952004+1%

205Margaret, ALAL7,1492004+2%

206Dacono, COCO6,8442004+2%

207Lincoln, CACA57,3672004+2%

208Huntley, ILIL29,1322004+1%

209Yorkville, ILIL26,7302004+2%

210Grimes, IAIA17,4052004+1%

211Wright City, MOMO5,8542004+2%

212Morrisville, NCNC32,4662004+1%

213Wake Forest, NCNC58,1472004+2%

214Otsego, MNMN24,5252004–

215Williston, NDND29,5222003+2%

216Meridian, IDID142,9882003+1%

217Port Royal, SCSC16,6482003+2%

218Collegedale, TNTN11,4992003+1%

219Aledo, TXTX7,1222003+1%

220Boerne, TXTX24,0472003+2%

221Hickory Creek, TXTX6,8752003+1%

222Horizon City, TXTX25,1182003+1%

223Lake Butler, FLFL17,1252003–

224Loughman, FLFL7,5912003+1%

225Minneola, FLFL21,0642003+1%

226North Port, FLFL96,5512003+1%

227Midlothian, TXTX46,6832003+1%

228Vero Lake Estates, FLFL6,5592003–

229Wesley Chapel, FLFL76,0112003–

230Winter Garden, FLFL48,0632003+1%

231Sachse, TXTX32,8342003+1%

232Sunnyvale, TXTX9,0082003+1%

233Gilberts, ILIL9,0822003+1%

234Honeygo, MDMD12,2502003–

235Wildewood, MDMD7,5522003–

236Cold Springs, NVNV11,3212003–

237Doolittle, TXTX6,2032003–

238Crozet, VAVA9,2892003+2%

239Massanetta Springs, VAVA6,3582003–

240Rincon Valley, AZAZ6,5122003–

241Celebration, FLFL13,6672003–

242Castle Rock, COCO83,8152003+1%

243Venus, TXTX8,8702003+2%

244Saddlebrooke, AZAZ13,0852003–

245Bothell East, WAWA14,5782003–

246Victoria, MNMN12,4472003+1%

247Lake Murray of Richland, SCSC7,0232003–

248Ruskin, FLFL29,8342003+2%

249Westphalia, MDMD13,2282003–

250Francisville, KYKY10,5652003–

251Tega Cay, SCSC14,4572003+1%

252Broadlands, VAVA14,3532003–

253Surprise, AZAZ175,3042003+1%

254Stafford Courthouse, VAVA5,8392003–

255Ankeny, IAIA77,8332003+2%

256Monument, COCO13,8132003+1%

257Canton, GAGA40,7782003+2%

258Jefferson, GAGA17,1852003+2%

259Villa Rica, GAGA21,0222003+2%

260El Mirage, AZAZ35,8202003+1%

261Parkland, FLFL39,1862003+1%

262Round Lake, ILIL18,5262003+2%

263North Liberty, IAIA21,9762003+1%

264Estero, FLFL38,3652003+1%

265Eagle, IDID34,6582003+1%

266Asbury, IAIA6,0352003+1%

267Lonsdale, MNMN5,1172003+2%

268Dardenne Prairie, MOMO15,0322003+1%

269Montgomery, ILIL21,9782003+2%

270New Albany, OHOH11,8032003+2%

271Jenks, OKOK28,1752002+1%

272Blythewood, SCSC7,2332002+2%

273Moncks Corner, SCSC20,6122002+1%

274Atoka, TNTN10,6452002+2%

275Cedar Park, TXTX79,0322002+1%

276Georgetown, TXTX106,9072002+1%

277Asbury Lake, FLFL14,4582002+1%

278Helotes, TXTX10,3872002+2%

279Justin, TXTX7,2852002+2%

280Four Corners, FLFL65,0482002–

281Krum, TXTX6,8082002+1%

282Lehigh Acres, FLFL132,3532002+1%

283Odessa, FLFL8,3812002–

284Nolanville, TXTX7,9832002+1%

285Oak Point, TXTX6,9092002+1%

286Yulee, FLFL16,6482002+1%

287Parker, TXTX6,4622002+1%

288Pearland, TXTX129,9302002+1%

289Rockwall, TXTX53,9802002+1%

290Grovetown, GAGA17,9392002+1%

291Draper, UTUT50,6522002+2%

292Ammon, IDID20,1192002+2%

293Ivins, UTUT11,5462002+1%

294Midway, UTUT6,0112002+1%

295North Salt Lake, UTUT23,5882002+1%

296DuPont, WAWA9,7782002+3%

297Liberty Lake, WAWA14,0292002+1%

298Yelm, WAWA12,0432002+1%

299St. Robert, MOMO5,6022002+1%

300Mesquite, NVNV24,0012002+1%

301Nellis AFB, NVNV5,0872002+2%

302Bargaintown, NJNJ5,3772002–

303Cullowhee, NCNC7,9732002+2%

304Five Forks, SCSC18,6562002–

305Lake Wylie, SCSC16,0062002+1%

306Tellico, TNTN7,4142002–

307Lackland AFB, TXTX6,7852002+2%

308Harvest, ALAL5,9552002+1%

309Bentonville, ARAR63,0572002+1%

310Spring Hill, KSKS10,7772002+2%

311Temescal Valley, CACA30,0692002–

312Lake Norman of Iredell, NCNC12,4942002–

313Mooresville, NCNC55,8422002+2%

314Carrollton, VAVA8,4362002–

315Crawfordville, FLFL5,7322002–

316Mansfield, TXTX84,4442002+1%

317Mill Creek East, WAWA25,4532002–

318Creedmoor, NCNC5,0462002+2%

319El Sobrante CDP (Riverside County), CACA13,1292002–

320Laurel Hill, VAVA7,4502002–

321Brandywine, MDMD12,1602002+2%

322Westport, NCNC5,9152002+1%

323Brentwood, CACA66,6072002+1%

324Newcastle, OKOK15,1982002+1%

325Cedar Hills, UTUT9,7552002+1%

326Doral, FLFL81,6342002+1%

327Temple, GAGA6,5642002+2%

328Avondale, AZAZ100,9832002+1%

329Commerce City, COCO72,3452002+2%

330Minooka, ILIL12,8992002+1%

331Johnston, IAIA25,0652002+1%

332Hampton, GAGA9,3492002+1%

333Hugo, MNMN17,1672002+1%

334Plainfield, ILIL50,0432002+2%

335Poplar Grove, ILIL5,2062002+3%

336Noblesville, ININ76,1112002+1%

337Carolina Shores, NCNC5,5402002–

338Huntersville, NCNC68,5352002+1%

339Indian Trail, NCNC44,3032002+1%

340Knightdale, NCNC23,1442002+1%

341Wesley Chapel, NCNC9,5662002–

342West Fargo, NDND41,1752002+1%

343Pass Christian, MSMS6,4592002+2%

344Clayton, NCNC32,6332002+2%

345Apex, NCNC80,4192002+1%

346Verdigris, OKOK5,8882001–

347Lexington, SCSC25,7292001+1%

348Sartell, MNMN19,9182001+1%

349Tea, SDSD8,0192001+1%

350Bullard, TXTX5,3012001+2%

351Smyrna, DEDE13,3402001+2%

352Alafaya, FLFL92,4492001–

353Haslet, TXTX5,2672001+1%

354Josephine, TXTX10,2082001+1%

355Homestead, FLFL86,2422001+1%

356Lakeway, TXTX19,0272001+1%

357League City, TXTX119,9052001+1%

358Lucas, TXTX8,8962001+1%

359Marion Oaks, FLFL23,9722001–

360New Braunfels, TXTX122,4922001+2%

361Three Oaks, FLFL6,1442001–

362West Melbourne, FLFL31,2852001+1%

363Wedgefield, FLFL8,8512001–

364Pflugerville, TXTX68,3162001+1%

365Byron, GAGA6,5672001+1%

366Red Oak, TXTX20,3942001+1%

367Hiram, GAGA5,5852001+1%

368Farr West, UTUT8,1632001+1%

369Harrisville, UTUT7,1542001+1%

370Heber, UTUT19,6512001–

371Perry, UTUT6,2262001+2%

372Santaquin, UTUT18,9892001+2%

373Issaquah, WAWA39,4232001+1%

374Avon, ININ25,3502001–

375Fishers, ININ104,8122001+1%

376Goddard, KSKS6,6382001+1%

377D'Iberville, MSMS13,5572001+1%

378Gardnerville, NVNV5,4862001+1%

379North Las Vegas, NVNV296,6532001+2%

380Whitney, NVNV47,2212001–

381Fort Dix, NJNJ7,9842001+2%

382Hampstead, NCNC9,2922001–

383Porters Neck, NCNC7,6542001–

384Atascocita, TXTX99,3542001–

385Stansbury Park, UTUT11,2422001+1%

386Meridianville, ALAL11,1502001+1%

387Fishhook, AKAK5,8192001–

388New River, AZAZ18,2402001–

389Fort Carson, COCO18,0192001+2%

390Anderson Creek, NCNC13,9272001–

391Allen, TXTX113,4472001+1%

392Gateway, FLFL11,1762001–

393Knik-Fairview, AKAK19,9722001–

394Alton, TXTX24,1382001+1%

395Hidalgo, TXTX15,3762001+1%

396Lathrop, CACA42,7832001+1%

397Castle Pines, COCO15,5832001–

398Salton City, CACA5,9882001–

399Sandy, OROR13,3232001+1%

400Gold Canyon, AZAZ13,1072001–

401Shorewood, ILIL18,5362001+1%

402Harrison, WIWI14,4922001–

403Wyndham, VAVA12,0992001–

404Union Hill-Novelty Hill, WAWA23,0472001–

405Trinity, FLFL18,9072001–

406Independent Hill, VAVA10,8532001–

407Pleasant Hill, IAIA11,2392001+1%

408Walton, KYKY5,8682001+2%

409Gulf Park Estates, MSMS6,2642001+1%

410Helena Valley Northwest, MTMT5,1832001+1%

411Gilbert, AZAZ287,2852001+1%

412Schofield Barracks, HIHI16,2702001+2%

413Grain Valley, MOMO16,9082001+1%

414Somerton, AZAZ14,9342001+2%

415Winfield, ININ9,1402001–

416Edinburg, TXTX110,7002001+1%

417Dublin, CACA71,6022001+1%

418Parker, COCO65,9852001+1%

419Senoia, GAGA6,2762001+2%

420South Fulton, GAGA112,8202001–

421Middleton, IDID12,6002001+1%

422Rathdrum, IDID13,2272001+1%

423Rexburg, IDID40,3342001+1%

424Casa Grande, AZAZ69,7532001+1%

425Florence, AZAZ25,2222001+1%

426Hughson, CACA8,0512001+2%

427Milton, GAGA41,2662001–

428Newnan, GAGA45,8672001+2%

429Sugar Grove, ILIL9,3812001+1%

430Basehor, KSKS8,2492001+2%

431Crestwood, KYKY6,5822001+2%

432Broussard, LALA15,7992001+1%

433Evans, COCO22,5002001+1%

434Manhattan, ILIL10,9432001+2%

435Isanti, MNMN7,7142001+1%

436Rogers, MNMN15,6062001+2%

437Ashland, MOMO5,2212001+2%

438Becker, MNMN5,4252001+1%

439Kiryas Joel, NYNY47,1472001+1%

440Mebane, NCNC21,9522001+2%

441New Haven, MIMI6,7492001+1%

442Pickerington, OHOH26,3332001+1%

443Crowley, TXTX20,9542000+1%

444Fruit Cove, FLFL35,8772000+1%

445Newberry, FLFL8,6182000+1%

446On Top of the World, FLFL16,0072000–

447Pebble Creek, FLFL10,4472000–

448Pine Ridge CDP (Citrus County), FLFL10,7622000–

449Viera East, FLFL12,5702000–

450Evans, GAGA36,9982000+1%

451Farmington, UTUT26,2662000+1%

452Hooper, UTUT9,7412000+1%

453Hurricane, UTUT25,7452000+1%

454Mapleton, UTUT16,2752000+2%

455Salem, UTUT12,2342000+1%

456Cottage Grove, WIWI8,9302000+1%

457Bargersville, ININ11,8622000+1%

458Spanish Springs, NVNV17,9802000–

459Winterville, NCNC10,9732000+1%

460Boiling Springs, SCSC12,9362000+1%

461Snyderville, UTUT5,9482000–

462Orting, WAWA8,8842000+2%

463El Dorado Hills, CACA51,0262000+1%

464Heber, CACA7,3122000+1%

465Oak Hills, CACA9,0132000–

466Pittsboro, NCNC5,0542000+2%

467Ancient Oaks, PAPA7,7772000+2%

468Panama City Beach, FLFL20,3752000+1%

469Moyock, NCNC5,6842000–

470Fort Mohave, AZAZ15,7152000–

471Goshen, CACA5,1362000–

472Fleming Island, FLFL29,7662000–

473Elkridge, MDMD26,2832000+1%

474Sunbury, OHOH8,8572000+2%

475Roxborough Park, COCO9,0852000–

476Dripping Springs, TXTX11,1672000+1%

477Arizona City, AZAZ9,5432000+1%

478Battlefield, MOMO6,3612000+1%

479Campbelltown, PAPA6,0922000+2%

480North Lynnwood, WAWA23,3392000–

481Brandon, SDSD11,3062000–

482Byram, MSMS12,7072000–

483Cornelius, NCNC35,0942000+2%

484Midlothian, VAVA19,1202000–

485Desert Palms, CACA6,5792000–

486Conroe, TXTX119,5642000+1%

487Frederickson, WAWA25,3832000+1%

488McNair, VAVA22,6552000–

489Merrifield, VAVA20,6982000+1%

490Quantico Base, VAVA5,8402000–

491Murrieta, CACA114,1242000+1%

492Miami Heights, OHOH5,2692000–

493Lake Elsinore, CACA75,0672000+1%

494Lone Tree, COCO15,2782000–

495Locust Grove, GAGA14,6102000+1%

496Loganville, GAGA17,2122000+1%

497Rincon, GAGA11,7262000+1%

498Sugar Hill, GAGA29,2802000+1%

499Imperial, CACA22,3302000+2%

500Eaton, COCO5,8482000+2%

SHOWING 1–500 OF 6,805

1 2…14

Download CSV (full list, 6,805 rows)

UPDATED 2026-08-08 · DATA: US CENSUS BUREAU DECENNIAL CENSUS

Frequently asked

Which city has the highest median year built?

Thompson's Station, Tennessee ranks #1 with 2013 (2020 Decennial Census).

What are the top 5 cities by median year built?

Thompson's Station, Tennessee, Horizon West, Florida, Briar Chapel, North Carolina, Iowa Colony, Texas, Sonterra, Texas.

How many cities are in this ranking?

6,805 cities qualify after filtering for population minimums and data availability (minimum 5,000 residents). The ranking covers 2020 Decennial Census data.

How is median year built measured?

Median year that housing structures were built. Source: US Census Bureau, 2020 Decennial Census.