دوناهو، أيوا

بحسب تعداد عام 2020، ^{[ 8 ]} بلغ عدد سكان المدينة 335 نسمة، موزعين على 128 أسرة و108 عائلات. وبلغت الكثافة السكانية 944.5 نسمة لكل ميل مربع (364.7 نسمة/ ^كم² ). كما بلغ عدد الوحدات السكنية 129 وحدة، بكثافة متوسطة قدرها 363.7 وحدة لكل ميل مربع (140.4 وحدة/كم² ⁾ . أما التركيبة العرقية للمدينة فكانت كالتالي: 95.8% من البيض ، 0.0% من السود أو الأمريكيين من أصل أفريقي ، 0.0% من السكان الأصليين ، 0.0% من الآسيويين ، 0.0% من سكان جزر المحيط الهادئ ، 0.3% من أعراق أخرى، و3.9% من أعراق مختلطة. وشكّل المنحدرون من أصول إسبانية أو لاتينية، بغض النظر عن العرق، 1.5% من السكان.

Of the 128 households, 40.6% of which had children under the age of 18 living with them, 68.8% were married couples living together, 6.2% were cohabitating couples, 10.9% had a female householder with no spouse or partner present and 14.1% had a male householder with no spouse or partner present. 15.6% of all households were non-families. 11.7% of all households were made up of individuals, 3.9% had someone living alone who was 65 years old or older.

The median age in the city was 39.7 years. 27.2% of the residents were under the age of 20; 3.6% were between the ages of 20 and 24; 27.5% were from 25 and 44; 24.8% were from 45 and 64; and 17.0% were 65 years of age or older. The gender makeup of the city was 52.5% male and 47.5% female.

As of the census^[9] of 2010, there were 346 people, 124 households, and 97 families living in the city. The population density was 988.6 inhabitants per square mile (381.7/km²). There were 127 housing units at an average density of 362.9 per square mile (140.1/km²). The racial makeup of the city was 98.8% White, 0.3% African American, and 0.9% from two or more races. Hispanic or Latino of any race were 0.9% of the population.

There were 124 households, of which 46.8% had children under the age of 18 living with them, 69.4% were married couples living together, 4.0% had a female householder with no husband present, 4.8% had a male householder with no wife present, and 21.8% were non-families. 16.1% of all households were made up of individuals, and 4.8% had someone living alone who was 65 years of age or older. The average household size was 2.79 and the average family size was 3.14.

The median age in the city was 35.4 years. 30.9% of residents were under the age of 18; 2.6% were between the ages of 18 and 24; 32.1% were from 25 to 44; 25.8% were from 45 to 64; and 8.7% were 65 years of age or older. The gender makeup of the city was 47.1% male and 52.9% female.

As of the census^[10] of 2000, there were 293 people, 103 households, and 83 families living in the city. The population density was 870.6 inhabitants per square mile (336.1/km²). There were 105 housing units at an average density of 312.0 per square mile (120.5/km²). The racial makeup of the city was 99.66% White. Hispanic or Latino of any race were 0.34% of the population.

بلغ عدد الأسر 103 أسر، منها 35.9% تضم أطفالاً دون سن 18 عاماً، و71.8% عبارة عن أزواج يعيشون معاً، و4.9% ترأسها امرأة بدون زوج، و19.4% لا تُصنف كأسر. وشكّل الأفراد 13.6% من إجمالي الأسر، بينما كان 4.9% منها تضم ​​شخصاً يعيش بمفرده يبلغ من العمر 65 عاماً أو أكثر. وبلغ متوسط ​​حجم الأسرة 2.84 فرداً، ومتوسط ​​حجم العائلة 3.13 فرداً.

28.3% من السكان دون سن 18 عامًا، و7.2% تتراوح أعمارهم بين 18 و24 عامًا، و31.1% تتراوح أعمارهم بين 25 و44 عامًا، و24.6% تتراوح أعمارهم بين 45 و64 عامًا، و8.9% تبلغ أعمارهم 65 عامًا فأكثر. وكان متوسط ​​العمر 36 عامًا. وبلغ عدد الذكور 109.3 لكل 100 أنثى. أما بالنسبة لمن تبلغ أعمارهم 18 عامًا فأكثر، فبلغ عدد الذكور 107.9 لكل 100 أنثى.

بلغ متوسط ​​دخل الأسرة في المدينة 56,250 دولارًا، ومتوسط ​​دخل العائلة 63,542 دولارًا. وبلغ متوسط ​​دخل الذكور 43,750 دولارًا مقابل 21,583 دولارًا للإناث. وبلغ متوسط ​​دخل الفرد في المدينة 24,895 دولارًا. وكان حوالي 5.1% من الأسر و11.0% من السكان تحت خط الفقر، بما في ذلك 23.2% ممن تقل أعمارهم عن 18 عامًا و7.7% ممن تبلغ أعمارهم 65 عامًا فأكثر.