アイオワ州ル・グランド

2020年の国勢調査によると^{[ 11 ]} 、市には905人、373世帯、243家族が居住していた。人口密度は1平方マイルあたり871.4人（ ¹平方キロメートルあたり336.4人）であった。住宅数は393戸で、平均密度は1平方マイルあたり378.4戸（¹平方キロメートルあたり146.1戸）であった。市の人種構成は、白人91.7% 、黒人またはアフリカ系アメリカ人0.8%、ネイティブアメリカン0.3% 、アジア人0.0%、太平洋諸島民0.0% 、その他の人種2.4%、2つ以上の人種4.8%であった。ヒスパニックまたはラテン系の人々は、人種を問わず人口の6.4%を占めていた。

373世帯のうち、27.6%は18歳未満の子どもと同居しており、51.7%は夫婦が同居、6.7%はカップルが同棲、24.4%は配偶者やパートナーがいない女性世帯主、17.2%は配偶者やパートナーがいない男性世帯主でした。全世帯の34.9%は非家族世帯でした。全世帯の30.0%は単身世帯で、15.8%は65歳以上の単身世帯でした。

市内の平均年齢は40.3歳でした。住民の28.2%が20歳未満、4.6%が20歳から24歳、21.9%が25歳から44歳、25.3%が45歳から64歳、20.0%が65歳以上でした。男女比は男性が48.3%、女性が51.7%でした。

2010年の国勢調査^{[ 12 ]}によると、市には938人、382世帯、276家族が住んでいた。人口密度は1平方マイルあたり901.9人（ ¹平方キロメートルあたり348.2人）であった。住宅数は401戸で、平均密度は1平方マイルあたり385.6戸（ ¹平方キロメートルあたり148.9戸）であった。市の人種構成は、白人97.1%、アフリカ系アメリカ人0.1% 、ネイティブアメリカン0.4%、アジア系0.1% 、太平洋諸島系0.1% 、その他の人種1.6% 、2つ以上の人種0.5%であった。ヒスパニックまたはラテン系は、人種を問わず人口の3.5%を占めた。 

There were 382 households, of which 32.2% had children under the age of 18 living with them, 55.8% were married couples living together, 11.3% had a female householder with no husband present, 5.2% had a male householder with no wife present, and 27.7% were non-families. 23.6% of all households were made up of individuals, and 8.1% had someone living alone who was 65 years of age or older. The average household size was 2.46 and the average family size was 2.87.

The median age in the city was 41.9 years. 25.3% of residents were under the age of 18; 7.3% were between the ages of 18 and 24; 22.2% were from 25 to 44; 29.1% were from 45 to 64; and 16% were 65 years of age or older. The gender makeup of the city was 48.8% male and 51.2% female.

As of the census^[13] of 2000, there were 883 people, 339 households, and 261 families living in the city. The population density was 847.0 inhabitants per square mile (327.0/km²). There were 353 housing units at an average density of 338.6 units per square mile (130.7 units/km²). The racial makeup of the city was 97.96% White, 0.34% African American, 0.45% Native American, 0.34% Asian, 0.23% from other races, and 0.68% from two or more races. Hispanic or Latino of any race were 1.81% of the population.

There were 339 households, out of which 36.3% had children under the age of 18 living with them, 64.9% were married couples living together, 10.3% had a female householder with no husband present, and 23.0% were non-families. 20.6% of all households were made up of individuals, and 8.8% had someone living alone who was 65 years of age or older. The average household size was 2.60 and the average family size was 3.00.

27.4% are under the age of 18, 7.2% from 18 to 24, 26.2% from 25 to 44, 25.4% from 45 to 64, and 13.8% who were 65 years of age or older. The median age was 36 years. For every 100 females, there were 95.4 males. For every 100 females age 18 and over, there were 94.2 males.

The median income for a household in the city was $39,333, and the median income for a family was $42,153. Males had a median income of $33,333 versus $23,036 for females. The per capita income for the city was $16,470. About 3.3% of families and 4.5% of the population were below the poverty line, including 5.3% of those under age 18 and 5.0% of those age 65 or over.