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CrashStats

SO21 road accidents: crash map and statistics

Police recorded 7,666 road traffic collisions in the SO21 postcode district, Winchester, from 1979 to 2025, and 11,282 people were killed or injured in them. Of those collisions, 235 were fatal and 1,895 were serious.

In 2025 police recorded 99 collisions, down 6% on 2024 (105).

Collisions since 1979
7,666
141st highest of 2,813 postcode districts
Casualties
11,282
1.47 per collision
Fatal collisions
235
261 people killed
Serious collisions
1,895
2,401 seriously injured
Collisions in 2025
99
Down 6% on 2024
Casualties in 2025
134
Down 11% on 2024

Road collision statistics for SO21

Collisions by severity, 1979 to 2025

  • Fatal2353.1%
  • Serious1,89525%
  • Slight5,53672%

What the data shows

  • SO21 had 1,044 collisions from 2016 to 2025, 24% fewer than the 1,368 from 2006 to 2015.
  • 28% of collisions in SO21 were fatal or serious, against 20% across Great Britain.
  • 863 children under 16 were killed or injured in SO21, 7.7% of the casualties whose age was recorded.
  • The road surface was wet, icy, snowy or flooded in 35% of collisions in SO21.

Where SO21 ranks among 2,813 postcode districts

Most collisions
141st
Most casualties
85th
Most fatal collisions
5th
Most serious collisions
29th

Collisions by day of the week

  • Monday1,089 (14%)
  • Tuesday1,058 (14%)
  • Wednesday1,101 (14%)
  • Thursday1,086 (14%)
  • Friday1,326 (17%)
  • Saturday1,047 (14%)
  • Sunday959 (13%)

Light conditions

  • Daylight5,566 (73%)
  • Dark, no street lighting1,630 (21%)
  • Dark, street lights lit356 (4.6%)
  • Dark, lighting unknown98 (1.3%)
  • Dark, street lights unlit16 (0.2%)

Type of road

  • Single carriageway4,122 (54%)
  • Dual carriageway3,156 (41%)
  • Roundabout225 (2.9%)
  • One way street or slip road143 (1.9%)
  • Not recorded20 (0.3%)

Speed limit at the scene

  • 20 mph3 (under 0.1%)
  • 30 mph832 (11%)
  • 40 mph553 (7.2%)
  • 50 mph503 (6.6%)
  • 60 mph2,805 (37%)
  • 70 mph2,967 (39%)
  • Not recorded3 (under 0.1%)

Weather at the time

  • Fine, no high winds6,010 (78%)
  • Raining, no high winds945 (12%)
  • Raining with high winds191 (2.5%)
  • Fine with high winds144 (1.9%)
  • Fog or mist104 (1.4%)
  • Snowing, no high winds52 (0.7%)
  • Snowing with high winds19 (0.2%)
  • Other188 (2.5%)
  • Not recorded13 (0.2%)

Who was hurt

  • Car occupant8,451 (75%)
  • Motorcyclist1,106 (9.8%)
  • Van occupant488 (4.3%)
  • Pedestrian380 (3.4%)
  • Cyclist305 (2.7%)
  • Goods vehicle occupant (over 3.5 tonnes)252 (2.2%)
  • Minibus occupant111 (1%)
  • Bus or coach occupant65 (0.6%)
  • Other vehicle occupant58 (0.5%)
  • Taxi or private hire car occupant51 (0.5%)
  • Other15 (0.1%)

Source: Department for Transport, STATS19 road safety data

SO21 road accidents by year

Collisions and casualties in SO21, 1979 to 2025

Collisions in SO21 peaked at 266 in 1989; 2025 had 99.

  • Collisions
  • Collisions in 2025: 99
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
202599134
2024105150
202393123
202295149
202183130
202074104
2019107155
2018131208
2017111158
2016146210
2015116165
2014137172
2013131182
2012115165
2011123161
2010130178
2009132181
2008155222
2007156218
2006173243
2005159232
2004149203
2003161245
2002168233
2001174255
2000177277
1999173247
1998165248
1997167247
1996184279
1995182272
1994189286
1993180272
1992204301
1991195295
1990247392
1989266385
1988194297
1987207296
1986194292
1985191259
1984203319
1983211301
1982228348
1981218355
1980247372
1979221366

Map of recent crashes in SO21

Map of the 24 most recent crashes in SO21

Use the arrow keys to move the map and the plus and minus keys to zoom.

  • 24 crashes
  • Serious
  • Slight

Recent road crashes in SO21

The 24 most recent collisions in SO21 happened between 20 September and 29 December 2025.

Severity

Crashes by road in SO21

The M3 has the most collisions in SO21, 1,275 of 7,666 (17%), followed by the A33 (967).

Collisions in SO21 on each road, 1979 to 2025
RankRoadCollisionsCasualtiesFatalSerious
1stM31,2752,00927229
2ndA339671,52031242
3rdA3037441,12531191
4thA3452277822142
5thA3137755918102
6thA27235452514102
7thA3090237318957
8thA302243571266
9thA970202287785
10thB3335182236128
11thB3049113190324
12thB3047106156431
13thA33383121227
14thB335483114317
15thB34046689221
16thB34205988716
17thA9695861216
18thB2177406328
19thB30433852112
20thA335243404
21stB333491501
22ndA30574501
23rdB30444800
24thB30574500
25thB33554501
26thM273700

Council areas covering SO21

Collisions in SO21 were recorded in 5 council areas. Winchester has 6,254 of 7,666 (82%).

Collisions in SO21 by council area, 1979 to 2025
RankCouncil areaCollisionsCasualtiesFatalSerious
1stWinchester6,2549,1481881,522
2ndTest Valley8971,38833244
3rdBasingstoke and Deane38857314107
4thEastleigh109153018
5thSouthampton141603

Towns in SO21

Collisions in SO21 were recorded in 7 towns, led by Compton, Winchester (240) and Colden Common (177).