Iowa in 1975
Deaths 670Fatal crashes 575Per 100,000 —US deaths 44,525
FARS data are based on police crash reports and other sources; the drunk-driving measure is based on the highest BAC of any driver in the crash. Final FARS file for 1975.
In 1975, 670 people died in 575 fatal crashes in Iowa.
Iowa accounted for 1.5% of the 44,525 crash deaths recorded nationally that year.
24.9% of the state's fatal crashes that year had at least one driver reported as drinking.
30% of the crashes happened between noon to 6pm; Saturday was the most common day.
Compared with 1974 and the nation
| Measure | Iowa 1975 | — | United States 1975 |
|---|---|---|---|
| Deaths | 670 | — | 44,525 |
| Fatal crashes | 575 | — | 39,161 |
| Deaths per 100,000 residents | — | — | — |
| Crashes with a drinking driver | 25% | — | 19% |
Counties in 1975
Every county with a fatal crash in 1975, by deaths. Counts under three are shown as "1–2" (small-count rule); the per-100,000 column is blank for them. 98 counties listed.
Per 100,000 uses the 2024 population estimate for every year, so early-year rates are understated where a county has grown.
Hour of day
Weekday
Questions and answers
How many people died in crashes in Iowa in 1975?
670 people in 575 fatal crashes, according to NHTSA's FARS 1975 file.
Which county in Iowa had the most crash deaths in 1975?
Polk County with 47 deaths in 39 fatal crashes. The table on this page lists every county with a fatal crash that year.
How did 1975 compare with 1974 in Iowa?
1975 is the first year in FARS; no earlier comparison exists.
Provenance
Source: NHTSA Fatality Analysis Reporting System, 1975 national file (accident table); US Census Bureau population estimates (no county estimates before 2000 are used, so no rate is shown for this year). Data through 31 Dec 2024; generated 30 Sep 2026.